Finding the Fourth Proportional to 78,151.60, 107,849.16 and 42,341.64

Step by Step Solution

1. Step 1: Write the proportion equation
   78,151.60 : 107,849.16 = 42,341.64 : x
2. Step 2: Convert to fraction form
   78,151.60/107,849.16 = 42,341.64/x
3. Step 3: Cross multiply
   78,151.60x = 107,849.16 × 42,341.64
4. Step 4: Simplify right side
   78,151.60x = 4,566,510,307.02
5. Step 5: Solve for x
   x = 4,566,510,307.02/78,151.60
6. Step 6: Final answer
   x = 58,431.44