Finding the Fourth Proportional to 139,899.83, 193,061.97 and 76,237.61

Step by Step Solution

1. Step 1: Write the proportion equation
   139,899.83 : 193,061.97 = 76,237.61 : x
2. Step 2: Convert to fraction form
   139,899.83/193,061.97 = 76,237.61/x
3. Step 3: Cross multiply
   139,899.83x = 193,061.97 × 76,237.61
4. Step 4: Simplify right side
   139,899.83x = 14,718,582,209.38
5. Step 5: Solve for x
   x = 14,718,582,209.38/139,899.83
6. Step 6: Final answer
   x = 105,208.01