Finding the Fourth Proportional to 212,132.43, 292,742.69 and 116,645.31

Step by Step Solution

1. Step 1: Write the proportion equation
   212,132.43 : 292,742.69 = 116,645.31 : x
2. Step 2: Convert to fraction form
   212,132.43/292,742.69 = 116,645.31/x
3. Step 3: Cross multiply
   212,132.43x = 292,742.69 × 116,645.31
4. Step 4: Simplify right side
   212,132.43x = 34,147,061,825.28
5. Step 5: Solve for x
   x = 34,147,061,825.28/212,132.43
6. Step 6: Final answer
   x = 160,970.49