Finding the Fourth Proportional to 82,990.72, 124,416.24 and 38,594.80

Step by Step Solution

1. Step 1: Write the proportion equation
   82,990.72 : 124,416.24 = 38,594.80 : x
2. Step 2: Convert to fraction form
   82,990.72/124,416.24 = 38,594.80/x
3. Step 3: Cross multiply
   82,990.72x = 124,416.24 × 38,594.80
4. Step 4: Simplify right side
   82,990.72x = 4,801,819,899.55
5. Step 5: Solve for x
   x = 4,801,819,899.55/82,990.72
6. Step 6: Final answer
   x = 57,859.72