Finding the Fourth Proportional to 142,026.76, 195,997.98 and 78,366.92

Step by Step Solution

1. Step 1: Write the proportion equation
   142,026.76 : 195,997.98 = 78,366.92 : x
2. Step 2: Convert to fraction form
   142,026.76/195,997.98 = 78,366.92/x
3. Step 3: Cross multiply
   142,026.76x = 195,997.98 × 78,366.92
4. Step 4: Simplify right side
   142,026.76x = 15,359,758,018.82
5. Step 5: Solve for x
   x = 15,359,758,018.82/142,026.76
6. Step 6: Final answer
   x = 108,146.93