Finding the Fourth Proportional to 78,148.76, 107,845.32 and 42,339.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,148.76 : 107,845.32 = 42,339.02 : x
2. Step 2: Convert to fraction form
   78,148.76/107,845.32 = 42,339.02/x
3. Step 3: Cross multiply
   78,148.76x = 107,845.32 × 42,339.02
4. Step 4: Simplify right side
   78,148.76x = 4,566,065,160.39
5. Step 5: Solve for x
   x = 4,566,065,160.39/78,148.76
6. Step 6: Final answer
   x = 58,427.86