Finding the Fourth Proportional to 78,108.41, 107,789.70 and 42,298.47

Step by Step Solution

1. Step 1: Write the proportion equation
   78,108.41 : 107,789.70 = 42,298.47 : x
2. Step 2: Convert to fraction form
   78,108.41/107,789.70 = 42,298.47/x
3. Step 3: Cross multiply
   78,108.41x = 107,789.70 × 42,298.47
4. Step 4: Simplify right side
   78,108.41x = 4,559,339,391.76
5. Step 5: Solve for x
   x = 4,559,339,391.76/78,108.41
6. Step 6: Final answer
   x = 58,371.94