Finding the Fourth Proportional to 152,062.76, 209,842.50 and 85,007.72

Step by Step Solution

1. Step 1: Write the proportion equation
   152,062.76 : 209,842.50 = 85,007.72 : x
2. Step 2: Convert to fraction form
   152,062.76/209,842.50 = 85,007.72/x
3. Step 3: Cross multiply
   152,062.76x = 209,842.50 × 85,007.72
4. Step 4: Simplify right side
   152,062.76x = 17,838,232,484.10
5. Step 5: Solve for x
   x = 17,838,232,484.10/152,062.76
6. Step 6: Final answer
   x = 117,308.36