Finding the Fourth Proportional to 78,317.27, 108,077.92 and 42,507.28

Step by Step Solution

1. Step 1: Write the proportion equation
   78,317.27 : 108,077.92 = 42,507.28 : x
2. Step 2: Convert to fraction form
   78,317.27/108,077.92 = 42,507.28/x
3. Step 3: Cross multiply
   78,317.27x = 108,077.92 × 42,507.28
4. Step 4: Simplify right side
   78,317.27x = 4,594,097,866.87
5. Step 5: Solve for x
   x = 4,594,097,866.87/78,317.27
6. Step 6: Final answer
   x = 58,660.09