Finding the Fourth Proportional to 202,111.43, 278,920.69 and 111,470.18

Step by Step Solution

1. Step 1: Write the proportion equation
   202,111.43 : 278,920.69 = 111,470.18 : x
2. Step 2: Convert to fraction form
   202,111.43/278,920.69 = 111,470.18/x
3. Step 3: Cross multiply
   202,111.43x = 278,920.69 × 111,470.18
4. Step 4: Simplify right side
   202,111.43x = 31,091,337,846.75
5. Step 5: Solve for x
   x = 31,091,337,846.75/202,111.43
6. Step 6: Final answer
   x = 153,832.66