Finding the Fourth Proportional to 78,171.24, 107,875.89 and 42,360.33

Step by Step Solution

1. Step 1: Write the proportion equation
   78,171.24 : 107,875.89 = 42,360.33 : x
2. Step 2: Convert to fraction form
   78,171.24/107,875.89 = 42,360.33/x
3. Step 3: Cross multiply
   78,171.24x = 107,875.89 × 42,360.33
4. Step 4: Simplify right side
   78,171.24x = 4,569,658,299.44
5. Step 5: Solve for x
   x = 4,569,658,299.44/78,171.24
6. Step 6: Final answer
   x = 58,457.03