Finding the Fourth Proportional to 74,026.71, 111,047.12 and 20,718.72

Step by Step Solution

1. Step 1: Write the proportion equation
   74,026.71 : 111,047.12 = 20,718.72 : x
2. Step 2: Convert to fraction form
   74,026.71/111,047.12 = 20,718.72/x
3. Step 3: Cross multiply
   74,026.71x = 111,047.12 × 20,718.72
4. Step 4: Simplify right side
   74,026.71x = 2,300,754,160.19
5. Step 5: Solve for x
   x = 2,300,754,160.19/74,026.71
6. Step 6: Final answer
   x = 31,080.05