Finding the Fourth Proportional to 85,689.62, 118,252.89 and 49,371.00

Step by Step Solution

1. Step 1: Write the proportion equation
   85,689.62 : 118,252.89 = 49,371.00 : x
2. Step 2: Convert to fraction form
   85,689.62/118,252.89 = 49,371.00/x
3. Step 3: Cross multiply
   85,689.62x = 118,252.89 × 49,371.00
4. Step 4: Simplify right side
   85,689.62x = 5,838,262,594.07
5. Step 5: Solve for x
   x = 5,838,262,594.07/85,689.62
6. Step 6: Final answer
   x = 68,132.67