Finding the Fourth Proportional to 103,087.62, 142,061.85 and 73,227.78

Step by Step Solution

1. Step 1: Write the proportion equation
   103,087.62 : 142,061.85 = 73,227.78 : x
2. Step 2: Convert to fraction form
   103,087.62/142,061.85 = 73,227.78/x
3. Step 3: Cross multiply
   103,087.62x = 142,061.85 × 73,227.78
4. Step 4: Simplify right side
   103,087.62x = 10,402,873,898.19
5. Step 5: Solve for x
   x = 10,402,873,898.19/103,087.62
6. Step 6: Final answer
   x = 100,912.93