Finding the Fourth Proportional to 80,196.28, 120,335.90 and 58,191.08

Step by Step Solution

1. Step 1: Write the proportion equation
   80,196.28 : 120,335.90 = 58,191.08 : x
2. Step 2: Convert to fraction form
   80,196.28/120,335.90 = 58,191.08/x
3. Step 3: Cross multiply
   80,196.28x = 120,335.90 × 58,191.08
4. Step 4: Simplify right side
   80,196.28x = 7,002,475,983.77
5. Step 5: Solve for x
   x = 7,002,475,983.77/80,196.28
6. Step 6: Final answer
   x = 87,316.72