Finding the Fourth Proportional to 42,619.72, 63,961.18 and 34,398.22

Step by Step Solution

1. Step 1: Write the proportion equation
   42,619.72 : 63,961.18 = 34,398.22 : x
2. Step 2: Convert to fraction form
   42,619.72/63,961.18 = 34,398.22/x
3. Step 3: Cross multiply
   42,619.72x = 63,961.18 × 34,398.22
4. Step 4: Simplify right side
   42,619.72x = 2,200,150,741.10
5. Step 5: Solve for x
   x = 2,200,150,741.10/42,619.72
6. Step 6: Final answer
   x = 51,622.83