Finding the Fourth Proportional to 78,426.38, 108,229.00 and 42,616.58

Step by Step Solution

1. Step 1: Write the proportion equation
   78,426.38 : 108,229.00 = 42,616.58 : x
2. Step 2: Convert to fraction form
   78,426.38/108,229.00 = 42,616.58/x
3. Step 3: Cross multiply
   78,426.38x = 108,229.00 × 42,616.58
4. Step 4: Simplify right side
   78,426.38x = 4,612,349,623.74
5. Step 5: Solve for x
   x = 4,612,349,623.74/78,426.38
6. Step 6: Final answer
   x = 58,811.21