Finding the Fourth Proportional to 212,784.72, 293,642.84 and 117,293.01

Step by Step Solution

1. Step 1: Write the proportion equation
   212,784.72 : 293,642.84 = 117,293.01 : x
2. Step 2: Convert to fraction form
   212,784.72/293,642.84 = 117,293.01/x
3. Step 3: Cross multiply
   212,784.72x = 293,642.84 × 117,293.01
4. Step 4: Simplify right side
   212,784.72x = 34,442,252,568.55
5. Step 5: Solve for x
   x = 34,442,252,568.55/212,784.72
6. Step 6: Final answer
   x = 161,864.31