Finding the Fourth Proportional to 82,431.50, 123,646.93 and 34,454.21

Step by Step Solution

1. Step 1: Write the proportion equation
   82,431.50 : 123,646.93 = 34,454.21 : x
2. Step 2: Convert to fraction form
   82,431.50/123,646.93 = 34,454.21/x
3. Step 3: Cross multiply
   82,431.50x = 123,646.93 × 34,454.21
4. Step 4: Simplify right side
   82,431.50x = 4,260,156,587.71
5. Step 5: Solve for x
   x = 4,260,156,587.71/82,431.50
6. Step 6: Final answer
   x = 51,681.18