Finding the Fourth Proportional to 217,300.17, 326,043.89 and 117,530.61

Step by Step Solution

1. Step 1: Write the proportion equation
   217,300.17 : 326,043.89 = 117,530.61 : x
2. Step 2: Convert to fraction form
   217,300.17/326,043.89 = 117,530.61/x
3. Step 3: Cross multiply
   217,300.17x = 326,043.89 × 117,530.61
4. Step 4: Simplify right side
   217,300.17x = 38,320,136,690.82
5. Step 5: Solve for x
   x = 38,320,136,690.82/217,300.17
6. Step 6: Final answer
   x = 176,346.56