Finding the Fourth Proportional to 212,897.76, 293,793.12 and 117,402.72

Step by Step Solution

1. Step 1: Write the proportion equation
   212,897.76 : 293,793.12 = 117,402.72 : x
2. Step 2: Convert to fraction form
   212,897.76/293,793.12 = 117,402.72/x
3. Step 3: Cross multiply
   212,897.76x = 293,793.12 × 117,402.72
4. Step 4: Simplify right side
   212,897.76x = 34,492,111,405.29
5. Step 5: Solve for x
   x = 34,492,111,405.29/212,897.76
6. Step 6: Final answer
   x = 162,012.56