Finding the Fourth Proportional to 91,528.18, 126,315.89 and 52,772.31

Step by Step Solution

1. Step 1: Write the proportion equation
   91,528.18 : 126,315.89 = 52,772.31 : x
2. Step 2: Convert to fraction form
   91,528.18/126,315.89 = 52,772.31/x
3. Step 3: Cross multiply
   91,528.18x = 126,315.89 × 52,772.31
4. Step 4: Simplify right side
   91,528.18x = 6,665,981,305.01
5. Step 5: Solve for x
   x = 6,665,981,305.01/91,528.18
6. Step 6: Final answer
   x = 72,829.82