Finding the Fourth Proportional to 85,158.58, 117,513.17 and 49,342.21

Step by Step Solution

1. Step 1: Write the proportion equation
   85,158.58 : 117,513.17 = 49,342.21 : x
2. Step 2: Convert to fraction form
   85,158.58/117,513.17 = 49,342.21/x
3. Step 3: Cross multiply
   85,158.58x = 117,513.17 × 49,342.21
4. Step 4: Simplify right side
   85,158.58x = 5,798,359,511.91
5. Step 5: Solve for x
   x = 5,798,359,511.91/85,158.58
6. Step 6: Final answer
   x = 68,088.96