Finding the Fourth Proportional to 56,732.84, 78,399.22 and 42,561.08

Step by Step Solution

1. Step 1: Write the proportion equation
   56,732.84 : 78,399.22 = 42,561.08 : x
2. Step 2: Convert to fraction form
   56,732.84/78,399.22 = 42,561.08/x
3. Step 3: Cross multiply
   56,732.84x = 78,399.22 × 42,561.08
4. Step 4: Simplify right side
   56,732.84x = 3,336,755,474.36
5. Step 5: Solve for x
   x = 3,336,755,474.36/56,732.84
6. Step 6: Final answer
   x = 58,815.24