Finding the Fourth Proportional to 111,111.88, 153,354.32 and 62,728.52

Step by Step Solution

1. Step 1: Write the proportion equation
   111,111.88 : 153,354.32 = 62,728.52 : x
2. Step 2: Convert to fraction form
   111,111.88/153,354.32 = 62,728.52/x
3. Step 3: Cross multiply
   111,111.88x = 153,354.32 × 62,728.52
4. Step 4: Simplify right side
   111,111.88x = 9,619,689,529.21
5. Step 5: Solve for x
   x = 9,619,689,529.21/111,111.88
6. Step 6: Final answer
   x = 86,576.61