Finding the Fourth Proportional to 111,468.72, 153,695.16 and 91,251.12

Step by Step Solution

1. Step 1: Write the proportion equation
   111,468.72 : 153,695.16 = 91,251.12 : x
2. Step 2: Convert to fraction form
   111,468.72/153,695.16 = 91,251.12/x
3. Step 3: Cross multiply
   111,468.72x = 153,695.16 × 91,251.12
4. Step 4: Simplify right side
   111,468.72x = 14,024,855,488.58
5. Step 5: Solve for x
   x = 14,024,855,488.58/111,468.72
6. Step 6: Final answer
   x = 125,818.75