Finding the Fourth Proportional to 107,641.90, 148,566.38 and 71,279.25

Step by Step Solution

1. Step 1: Write the proportion equation
   107,641.90 : 148,566.38 = 71,279.25 : x
2. Step 2: Convert to fraction form
   107,641.90/148,566.38 = 71,279.25/x
3. Step 3: Cross multiply
   107,641.90x = 148,566.38 × 71,279.25
4. Step 4: Simplify right side
   107,641.90x = 10,589,700,141.62
5. Step 5: Solve for x
   x = 10,589,700,141.62/107,641.90
6. Step 6: Final answer
   x = 98,378.98