Finding the Fourth Proportional to 215,886.06, 323,690.52 and 89,613.47

Step by Step Solution

1. Step 1: Write the proportion equation
   215,886.06 : 323,690.52 = 89,613.47 : x
2. Step 2: Convert to fraction form
   215,886.06/323,690.52 = 89,613.47/x
3. Step 3: Cross multiply
   215,886.06x = 323,690.52 × 89,613.47
4. Step 4: Simplify right side
   215,886.06x = 29,007,030,703.30
5. Step 5: Solve for x
   x = 29,007,030,703.30/215,886.06
6. Step 6: Final answer
   x = 134,362.69