Finding the Fourth Proportional to 78,146.72, 107,841.62 and 42,334.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,146.72 : 107,841.62 = 42,334.60 : x
2. Step 2: Convert to fraction form
   78,146.72/107,841.62 = 42,334.60/x
3. Step 3: Cross multiply
   78,146.72x = 107,841.62 × 42,334.60
4. Step 4: Simplify right side
   78,146.72x = 4,565,431,846.05
5. Step 5: Solve for x
   x = 4,565,431,846.05/78,146.72
6. Step 6: Final answer
   x = 58,421.29