Finding the Fourth Proportional to 186,508,431,233.61, 257,381,633,109.42 and 100,869,396,978.17

Step by Step Solution

1. Step 1: Write the proportion equation
   186,508,431,233.61 : 257,381,633,109.42 = 100,869,396,978.17 : x
2. Step 2: Convert to fraction form
   186,508,431,233.61/257,381,633,109.42 = 100,869,396,978.17/x
3. Step 3: Cross multiply
   186,508,431,233.61x = 257,381,633,109.42 × 100,869,396,978.17
4. Step 4: Simplify right side
   186,508,431,233.61x = 25,961,930,125,003,792,056,320
5. Step 5: Solve for x
   x = 25,961,930,125,003,792,056,320/186,508,431,233.61
6. Step 6: Final answer
   x = 139,199,766,752.02