Finding the Fourth Proportional to 76,586.83, 105,689.24 and 42,130.82

Step by Step Solution

1. Step 1: Write the proportion equation
   76,586.83 : 105,689.24 = 42,130.82 : x
2. Step 2: Convert to fraction form
   76,586.83/105,689.24 = 42,130.82/x
3. Step 3: Cross multiply
   76,586.83x = 105,689.24 × 42,130.82
4. Step 4: Simplify right side
   76,586.83x = 4,452,774,003.61
5. Step 5: Solve for x
   x = 4,452,774,003.61/76,586.83
6. Step 6: Final answer
   x = 58,140.21