Finding the Fourth Proportional to 77,895.72, 107,495.96 and 42,085.62

Step by Step Solution

1. Step 1: Write the proportion equation
   77,895.72 : 107,495.96 = 42,085.62 : x
2. Step 2: Convert to fraction form
   77,895.72/107,495.96 = 42,085.62/x
3. Step 3: Cross multiply
   77,895.72x = 107,495.96 × 42,085.62
4. Step 4: Simplify right side
   77,895.72x = 4,524,034,124.10
5. Step 5: Solve for x
   x = 4,524,034,124.10/77,895.72
6. Step 6: Final answer
   x = 58,078.08