Finding the Fourth Proportional to 82,865.31, 124,312.58 and 30,348.15

Step by Step Solution

1. Step 1: Write the proportion equation
   82,865.31 : 124,312.58 = 30,348.15 : x
2. Step 2: Convert to fraction form
   82,865.31/124,312.58 = 30,348.15/x
3. Step 3: Cross multiply
   82,865.31x = 124,312.58 × 30,348.15
4. Step 4: Simplify right side
   82,865.31x = 3,772,656,672.99
5. Step 5: Solve for x
   x = 3,772,656,672.99/82,865.31
6. Step 6: Final answer
   x = 45,527.58