Finding the Fourth Proportional to 152,061.76, 209,841.12 and 85,006.72

Step by Step Solution

1. Step 1: Write the proportion equation
   152,061.76 : 209,841.12 = 85,006.72 : x
2. Step 2: Convert to fraction form
   152,061.76/209,841.12 = 85,006.72/x
3. Step 3: Cross multiply
   152,061.76x = 209,841.12 × 85,006.72
4. Step 4: Simplify right side
   152,061.76x = 17,837,905,332.33
5. Step 5: Solve for x
   x = 17,837,905,332.33/152,061.76
6. Step 6: Final answer
   x = 117,306.98