Finding the Fourth Proportional to 202,111.10, 278,915.52 and 111,470.90

Step by Step Solution

1. Step 1: Write the proportion equation
   202,111.10 : 278,915.52 = 111,470.90 : x
2. Step 2: Convert to fraction form
   202,111.10/278,915.52 = 111,470.90/x
3. Step 3: Cross multiply
   202,111.10x = 278,915.52 × 111,470.90
4. Step 4: Simplify right side
   202,111.10x = 31,090,964,038.37
5. Step 5: Solve for x
   x = 31,090,964,038.37/202,111.10
6. Step 6: Final answer
   x = 153,831.06