Finding the Fourth Proportional to 74,308.50, 102,544.38 and 42,042.78

Step by Step Solution

1. Step 1: Write the proportion equation
   74,308.50 : 102,544.38 = 42,042.78 : x
2. Step 2: Convert to fraction form
   74,308.50/102,544.38 = 42,042.78/x
3. Step 3: Cross multiply
   74,308.50x = 102,544.38 × 42,042.78
4. Step 4: Simplify right side
   74,308.50x = 4,311,250,808.58
5. Step 5: Solve for x
   x = 4,311,250,808.58/74,308.50
6. Step 6: Final answer
   x = 58,018.27