Finding the Fourth Proportional to 78,170.89, 107,875.98 and 42,360.93

Step by Step Solution

1. Step 1: Write the proportion equation
   78,170.89 : 107,875.98 = 42,360.93 : x
2. Step 2: Convert to fraction form
   78,170.89/107,875.98 = 42,360.93/x
3. Step 3: Cross multiply
   78,170.89x = 107,875.98 × 42,360.93
4. Step 4: Simplify right side
   78,170.89x = 4,569,726,086.28
5. Step 5: Solve for x
   x = 4,569,726,086.28/78,170.89
6. Step 6: Final answer
   x = 58,458.16