Finding the Fourth Proportional to 78,172.24, 107,877.27 and 42,361.33

Step by Step Solution

1. Step 1: Write the proportion equation
   78,172.24 : 107,877.27 = 42,361.33 : x
2. Step 2: Convert to fraction form
   78,172.24/107,877.27 = 42,361.33/x
3. Step 3: Cross multiply
   78,172.24x = 107,877.27 × 42,361.33
4. Step 4: Simplify right side
   78,172.24x = 4,569,824,633.97
5. Step 5: Solve for x
   x = 4,569,824,633.97/78,172.24
6. Step 6: Final answer
   x = 58,458.41