Finding the Fourth Proportional to 78,150.31, 107,847.53 and 42,340.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,150.31 : 107,847.53 = 42,340.32 : x
2. Step 2: Convert to fraction form
   78,150.31/107,847.53 = 42,340.32/x
3. Step 3: Cross multiply
   78,150.31x = 107,847.53 × 42,340.32
4. Step 4: Simplify right side
   78,150.31x = 4,566,298,931.41
5. Step 5: Solve for x
   x = 4,566,298,931.41/78,150.31
6. Step 6: Final answer
   x = 58,429.70