Finding the Fourth Proportional to 77,520.52, 107,016.24 and 52,017.76

Step by Step Solution

1. Step 1: Write the proportion equation
   77,520.52 : 107,016.24 = 52,017.76 : x
2. Step 2: Convert to fraction form
   77,520.52/107,016.24 = 52,017.76/x
3. Step 3: Cross multiply
   77,520.52x = 107,016.24 × 52,017.76
4. Step 4: Simplify right side
   77,520.52x = 5,566,745,088.42
5. Step 5: Solve for x
   x = 5,566,745,088.42/77,520.52
6. Step 6: Final answer
   x = 71,809.96