Finding the Fourth Proportional to 78,066.30, 107,731.77 and 42,256.27

Step by Step Solution

1. Step 1: Write the proportion equation
   78,066.30 : 107,731.77 = 42,256.27 : x
2. Step 2: Convert to fraction form
   78,066.30/107,731.77 = 42,256.27/x
3. Step 3: Cross multiply
   78,066.30x = 107,731.77 × 42,256.27
4. Step 4: Simplify right side
   78,066.30x = 4,552,342,222.04
5. Step 5: Solve for x
   x = 4,552,342,222.04/78,066.30
6. Step 6: Final answer
   x = 58,313.80