Finding the Fourth Proportional to 78,088.05, 107,761.39 and 42,278.05

Step by Step Solution

1. Step 1: Write the proportion equation
   78,088.05 : 107,761.39 = 42,278.05 : x
2. Step 2: Convert to fraction form
   78,088.05/107,761.39 = 42,278.05/x
3. Step 3: Cross multiply
   78,088.05x = 107,761.39 × 42,278.05
4. Step 4: Simplify right side
   78,088.05x = 4,555,941,463.50
5. Step 5: Solve for x
   x = 4,555,941,463.50/78,088.05
6. Step 6: Final answer
   x = 58,343.64