Finding the Fourth Proportional to 78,610.91, 108,483.53 and 42,800.85

Step by Step Solution

1. Step 1: Write the proportion equation
   78,610.91 : 108,483.53 = 42,800.85 : x
2. Step 2: Convert to fraction form
   78,610.91/108,483.53 = 42,800.85/x
3. Step 3: Cross multiply
   78,610.91x = 108,483.53 × 42,800.85
4. Step 4: Simplify right side
   78,610.91x = 4,643,187,081.00
5. Step 5: Solve for x
   x = 4,643,187,081.00/78,610.91
6. Step 6: Final answer
   x = 59,065.43