Finding the Fourth Proportional to 117,061.62, 161,516.91 and 71,120.34

Step by Step Solution

1. Step 1: Write the proportion equation
   117,061.62 : 161,516.91 = 71,120.34 : x
2. Step 2: Convert to fraction form
   117,061.62/161,516.91 = 71,120.34/x
3. Step 3: Cross multiply
   117,061.62x = 161,516.91 × 71,120.34
4. Step 4: Simplify right side
   117,061.62x = 11,487,137,554.95
5. Step 5: Solve for x
   x = 11,487,137,554.95/117,061.62
6. Step 6: Final answer
   x = 98,128.98