Finding the Fourth Proportional to 76,288.50, 105,278.85 and 42,755.22

Step by Step Solution

1. Step 1: Write the proportion equation
   76,288.50 : 105,278.85 = 42,755.22 : x
2. Step 2: Convert to fraction form
   76,288.50/105,278.85 = 42,755.22/x
3. Step 3: Cross multiply
   76,288.50x = 105,278.85 × 42,755.22
4. Step 4: Simplify right side
   76,288.50x = 4,501,220,393.10
5. Step 5: Solve for x
   x = 4,501,220,393.10/76,288.50
6. Step 6: Final answer
   x = 59,002.61