Finding the Fourth Proportional to 45,159.16, 67,724.38 and 42,210.81

Step by Step Solution

1. Step 1: Write the proportion equation
   45,159.16 : 67,724.38 = 42,210.81 : x
2. Step 2: Convert to fraction form
   45,159.16/67,724.38 = 42,210.81/x
3. Step 3: Cross multiply
   45,159.16x = 67,724.38 × 42,210.81
4. Step 4: Simplify right side
   45,159.16x = 2,858,701,042.47
5. Step 5: Solve for x
   x = 2,858,701,042.47/45,159.16
6. Step 6: Final answer
   x = 63,302.80