Finding the Fourth Proportional to 111,002.52, 153,081.24 and 72,748.13

Step by Step Solution

1. Step 1: Write the proportion equation
   111,002.52 : 153,081.24 = 72,748.13 : x
2. Step 2: Convert to fraction form
   111,002.52/153,081.24 = 72,748.13/x
3. Step 3: Cross multiply
   111,002.52x = 153,081.24 × 72,748.13
4. Step 4: Simplify right side
   111,002.52x = 11,136,374,057.98
5. Step 5: Solve for x
   x = 11,136,374,057.98/111,002.52
6. Step 6: Final answer
   x = 100,325.42