Finding the Fourth Proportional to 152,972.56, 229,517.68 and 74,080.72

Step by Step Solution

1. Step 1: Write the proportion equation
   152,972.56 : 229,517.68 = 74,080.72 : x
2. Step 2: Convert to fraction form
   152,972.56/229,517.68 = 74,080.72/x
3. Step 3: Cross multiply
   152,972.56x = 229,517.68 × 74,080.72
4. Step 4: Simplify right side
   152,972.56x = 17,002,834,987.13
5. Step 5: Solve for x
   x = 17,002,834,987.13/152,972.56
6. Step 6: Final answer
   x = 111,149.57