Finding the Fourth Proportional to 78,066.10, 107,731.49 and 42,256.11

Step by Step Solution

1. Step 1: Write the proportion equation
   78,066.10 : 107,731.49 = 42,256.11 : x
2. Step 2: Convert to fraction form
   78,066.10/107,731.49 = 42,256.11/x
3. Step 3: Cross multiply
   78,066.10x = 107,731.49 × 42,256.11
4. Step 4: Simplify right side
   78,066.10x = 4,552,313,691.90
5. Step 5: Solve for x
   x = 4,552,313,691.90/78,066.10
6. Step 6: Final answer
   x = 58,313.58