Finding the Fourth Proportional to 152,142.15, 209,940 and 84,148.32

Step by Step Solution

1. Step 1: Write the proportion equation
   152,142.15 : 209,940 = 84,148.32 : x
2. Step 2: Convert to fraction form
   152,142.15/209,940 = 84,148.32/x
3. Step 3: Cross multiply
   152,142.15x = 209,940 × 84,148.32
4. Step 4: Simplify right side
   152,142.15x = 17,666,098,300.80
5. Step 5: Solve for x
   x = 17,666,098,300.80/152,142.15
6. Step 6: Final answer
   x = 116,115.74