Finding the Fourth Proportional to 156,476.32, 215,933.52 and 89,404

Step by Step Solution

1. Step 1: Write the proportion equation
   156,476.32 : 215,933.52 = 89,404 : x
2. Step 2: Convert to fraction form
   156,476.32/215,933.52 = 89,404/x
3. Step 3: Cross multiply
   156,476.32x = 215,933.52 × 89,404
4. Step 4: Simplify right side
   156,476.32x = 19,305,320,422.08
5. Step 5: Solve for x
   x = 19,305,320,422.08/156,476.32
6. Step 6: Final answer
   x = 123,375.35