Finding the Fourth Proportional to 78,147.58, 107,843.46 and 42,338.47

Step by Step Solution

1. Step 1: Write the proportion equation
   78,147.58 : 107,843.46 = 42,338.47 : x
2. Step 2: Convert to fraction form
   78,147.58/107,843.46 = 42,338.47/x
3. Step 3: Cross multiply
   78,147.58x = 107,843.46 × 42,338.47
4. Step 4: Simplify right side
   78,147.58x = 4,565,927,095.91
5. Step 5: Solve for x
   x = 4,565,927,095.91/78,147.58
6. Step 6: Final answer
   x = 58,426.98