Finding the Fourth Proportional to 82,512.16, 123,779.76 and 40,948

Step by Step Solution

1. Step 1: Write the proportion equation
   82,512.16 : 123,779.76 = 40,948 : x
2. Step 2: Convert to fraction form
   82,512.16/123,779.76 = 40,948/x
3. Step 3: Cross multiply
   82,512.16x = 123,779.76 × 40,948
4. Step 4: Simplify right side
   82,512.16x = 5,068,533,612.48
5. Step 5: Solve for x
   x = 5,068,533,612.48/82,512.16
6. Step 6: Final answer
   x = 61,427.72