Finding the Fourth Proportional to 77,857.08, 107,442.78 and 42,047.10

Step by Step Solution

1. Step 1: Write the proportion equation
   77,857.08 : 107,442.78 = 42,047.10 : x
2. Step 2: Convert to fraction form
   77,857.08/107,442.78 = 42,047.10/x
3. Step 3: Cross multiply
   77,857.08x = 107,442.78 × 42,047.10
4. Step 4: Simplify right side
   77,857.08x = 4,517,656,567.49
5. Step 5: Solve for x
   x = 4,517,656,567.49/77,857.08
6. Step 6: Final answer
   x = 58,024.99