Finding the Fourth Proportional to 82,111.83, 123,129.47 and 42,658.35

Step by Step Solution

1. Step 1: Write the proportion equation
   82,111.83 : 123,129.47 = 42,658.35 : x
2. Step 2: Convert to fraction form
   82,111.83/123,129.47 = 42,658.35/x
3. Step 3: Cross multiply
   82,111.83x = 123,129.47 × 42,658.35
4. Step 4: Simplify right side
   82,111.83x = 5,252,499,431.53
5. Step 5: Solve for x
   x = 5,252,499,431.53/82,111.83
6. Step 6: Final answer
   x = 63,967.64