Finding the Fourth Proportional to 86,402.88, 129,526.56 and 30,985.92

Step by Step Solution

1. Step 1: Write the proportion equation
   86,402.88 : 129,526.56 = 30,985.92 : x
2. Step 2: Convert to fraction form
   86,402.88/129,526.56 = 30,985.92/x
3. Step 3: Cross multiply
   86,402.88x = 129,526.56 × 30,985.92
4. Step 4: Simplify right side
   86,402.88x = 4,013,499,626.04
5. Step 5: Solve for x
   x = 4,013,499,626.04/86,402.88
6. Step 6: Final answer
   x = 46,450.99