Finding the Fourth Proportional to 78,617.52, 108,491.61 and 42,807.51

Step by Step Solution

1. Step 1: Write the proportion equation
   78,617.52 : 108,491.61 = 42,807.51 : x
2. Step 2: Convert to fraction form
   78,617.52/108,491.61 = 42,807.51/x
3. Step 3: Cross multiply
   78,617.52x = 108,491.61 × 42,807.51
4. Step 4: Simplify right side
   78,617.52x = 4,644,255,679.99
5. Step 5: Solve for x
   x = 4,644,255,679.99/78,617.52
6. Step 6: Final answer
   x = 59,074.05