Finding the Fourth Proportional to 78,066.86, 107,732.32 and 42,256.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,066.86 : 107,732.32 = 42,256.76 : x
2. Step 2: Convert to fraction form
   78,066.86/107,732.32 = 42,256.76/x
3. Step 3: Cross multiply
   78,066.86x = 107,732.32 × 42,256.76
4. Step 4: Simplify right side
   78,066.86x = 4,552,418,146.18
5. Step 5: Solve for x
   x = 4,552,418,146.18/78,066.86
6. Step 6: Final answer
   x = 58,314.35