Finding the Fourth Proportional to 42,300.52, 63,457.16 and 18,291.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,300.52 : 63,457.16 = 18,291.40 : x
2. Step 2: Convert to fraction form
   42,300.52/63,457.16 = 18,291.40/x
3. Step 3: Cross multiply
   42,300.52x = 63,457.16 × 18,291.40
4. Step 4: Simplify right side
   42,300.52x = 1,160,720,296.42
5. Step 5: Solve for x
   x = 1,160,720,296.42/42,300.52
6. Step 6: Final answer
   x = 27,439.86