Finding the Fourth Proportional to 92,759.31, 128,007.89 and 52,472.22

Step by Step Solution

1. Step 1: Write the proportion equation
   92,759.31 : 128,007.89 = 52,472.22 : x
2. Step 2: Convert to fraction form
   92,759.31/128,007.89 = 52,472.22/x
3. Step 3: Cross multiply
   92,759.31x = 128,007.89 × 52,472.22
4. Step 4: Simplify right side
   92,759.31x = 6,716,858,165.82
5. Step 5: Solve for x
   x = 6,716,858,165.82/92,759.31
6. Step 6: Final answer
   x = 72,411.69