Finding the Fourth Proportional to 76,555.31, 105,641.46 and 42,563.18

Step by Step Solution

1. Step 1: Write the proportion equation
   76,555.31 : 105,641.46 = 42,563.18 : x
2. Step 2: Convert to fraction form
   76,555.31/105,641.46 = 42,563.18/x
3. Step 3: Cross multiply
   76,555.31x = 105,641.46 × 42,563.18
4. Step 4: Simplify right side
   76,555.31x = 4,496,435,949.24
5. Step 5: Solve for x
   x = 4,496,435,949.24/76,555.31
6. Step 6: Final answer
   x = 58,734.48