Finding the Fourth Proportional to 102,301.28, 141,179.58 and 56,362.79

Step by Step Solution

1. Step 1: Write the proportion equation
   102,301.28 : 141,179.58 = 56,362.79 : x
2. Step 2: Convert to fraction form
   102,301.28/141,179.58 = 56,362.79/x
3. Step 3: Cross multiply
   102,301.28x = 141,179.58 × 56,362.79
4. Step 4: Simplify right side
   102,301.28x = 7,957,275,019.83
5. Step 5: Solve for x
   x = 7,957,275,019.83/102,301.28
6. Step 6: Final answer
   x = 77,782.75