Finding the Fourth Proportional to 78,066, 107,731.02 and 42,256.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,066 : 107,731.02 = 42,256.02 : x
2. Step 2: Convert to fraction form
   78,066/107,731.02 = 42,256.02/x
3. Step 3: Cross multiply
   78,066x = 107,731.02 × 42,256.02
4. Step 4: Simplify right side
   78,066x = 4,552,284,135.74
5. Step 5: Solve for x
   x = 4,552,284,135.74/78,066
6. Step 6: Final answer
   x = 58,313.28