Finding the Fourth Proportional to 42,870.78, 59,177.19 and 34,899.17

Step by Step Solution

1. Step 1: Write the proportion equation
   42,870.78 : 59,177.19 = 34,899.17 : x
2. Step 2: Convert to fraction form
   42,870.78/59,177.19 = 34,899.17/x
3. Step 3: Cross multiply
   42,870.78x = 59,177.19 × 34,899.17
4. Step 4: Simplify right side
   42,870.78x = 2,065,234,813.93
5. Step 5: Solve for x
   x = 2,065,234,813.93/42,870.78
6. Step 6: Final answer
   x = 48,173.48