Finding the Fourth Proportional to 78,185.79, 107,893.49 and 42,375.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,185.79 : 107,893.49 = 42,375.02 : x
2. Step 2: Convert to fraction form
   78,185.79/107,893.49 = 42,375.02/x
3. Step 3: Cross multiply
   78,185.79x = 107,893.49 × 42,375.02
4. Step 4: Simplify right side
   78,185.79x = 4,571,988,045.28
5. Step 5: Solve for x
   x = 4,571,988,045.28/78,185.79
6. Step 6: Final answer
   x = 58,475.95