Finding the Fourth Proportional to 131,870.09, 181,980.50 and 71,442.26

Step by Step Solution

1. Step 1: Write the proportion equation
   131,870.09 : 181,980.50 = 71,442.26 : x
2. Step 2: Convert to fraction form
   131,870.09/181,980.50 = 71,442.26/x
3. Step 3: Cross multiply
   131,870.09x = 181,980.50 × 71,442.26
4. Step 4: Simplify right side
   131,870.09x = 13,001,098,293.67
5. Step 5: Solve for x
   x = 13,001,098,293.67/131,870.09
6. Step 6: Final answer
   x = 98,590.20