Finding the Fourth Proportional to 78,149.58, 107,846.22 and 42,340.47

Step by Step Solution

1. Step 1: Write the proportion equation
   78,149.58 : 107,846.22 = 42,340.47 : x
2. Step 2: Convert to fraction form
   78,149.58/107,846.22 = 42,340.47/x
3. Step 3: Cross multiply
   78,149.58x = 107,846.22 × 42,340.47
4. Step 4: Simplify right side
   78,149.58x = 4,566,259,642.52
5. Step 5: Solve for x
   x = 4,566,259,642.52/78,149.58
6. Step 6: Final answer
   x = 58,429.74