Finding the Fourth Proportional to 78,148.30, 107,844.50 and 42,339.22

Step by Step Solution

1. Step 1: Write the proportion equation
   78,148.30 : 107,844.50 = 42,339.22 : x
2. Step 2: Convert to fraction form
   78,148.30/107,844.50 = 42,339.22/x
3. Step 3: Cross multiply
   78,148.30x = 107,844.50 × 42,339.22
4. Step 4: Simplify right side
   78,148.30x = 4,566,052,011.29
5. Step 5: Solve for x
   x = 4,566,052,011.29/78,148.30
6. Step 6: Final answer
   x = 58,428.04