Finding the Fourth Proportional to 78,386.37, 108,171.39 and 42,575.59

Step by Step Solution

1. Step 1: Write the proportion equation
   78,386.37 : 108,171.39 = 42,575.59 : x
2. Step 2: Convert to fraction form
   78,386.37/108,171.39 = 42,575.59/x
3. Step 3: Cross multiply
   78,386.37x = 108,171.39 × 42,575.59
4. Step 4: Simplify right side
   78,386.37x = 4,605,460,750.37
5. Step 5: Solve for x
   x = 4,605,460,750.37/78,386.37
6. Step 6: Final answer
   x = 58,753.34