Finding the Fourth Proportional to 213,128.17, 294,119.31 and 117,634.93

Step by Step Solution

1. Step 1: Write the proportion equation
   213,128.17 : 294,119.31 = 117,634.93 : x
2. Step 2: Convert to fraction form
   213,128.17/294,119.31 = 117,634.93/x
3. Step 3: Cross multiply
   213,128.17x = 294,119.31 × 117,634.93
4. Step 4: Simplify right side
   213,128.17x = 34,598,704,443.50
5. Step 5: Solve for x
   x = 34,598,704,443.50/213,128.17
6. Step 6: Final answer
   x = 162,337.55