Finding the Fourth Proportional to 42,171.63, 58,159.16 and 34,990.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,171.63 : 58,159.16 = 34,990.18 : x
2. Step 2: Convert to fraction form
   42,171.63/58,159.16 = 34,990.18/x
3. Step 3: Cross multiply
   42,171.63x = 58,159.16 × 34,990.18
4. Step 4: Simplify right side
   42,171.63x = 2,034,999,315.18
5. Step 5: Solve for x
   x = 2,034,999,315.18/42,171.63
6. Step 6: Final answer
   x = 48,255.17