Finding the Fourth Proportional to 86,591.43, 129,894.51 and 30,426.69

Step by Step Solution

1. Step 1: Write the proportion equation
   86,591.43 : 129,894.51 = 30,426.69 : x
2. Step 2: Convert to fraction form
   86,591.43/129,894.51 = 30,426.69/x
3. Step 3: Cross multiply
   86,591.43x = 129,894.51 × 30,426.69
4. Step 4: Simplify right side
   86,591.43x = 3,952,259,444.32
5. Step 5: Solve for x
   x = 3,952,259,444.32/86,591.43
6. Step 6: Final answer
   x = 45,642.62