Finding the Fourth Proportional to 86,261.72, 129,391.34 and 27,100.94

Step by Step Solution

1. Step 1: Write the proportion equation
   86,261.72 : 129,391.34 = 27,100.94 : x
2. Step 2: Convert to fraction form
   86,261.72/129,391.34 = 27,100.94/x
3. Step 3: Cross multiply
   86,261.72x = 129,391.34 × 27,100.94
4. Step 4: Simplify right side
   86,261.72x = 3,506,626,941.86
5. Step 5: Solve for x
   x = 3,506,626,941.86/86,261.72
6. Step 6: Final answer
   x = 40,651.02