Finding the Fourth Proportional to 91,196.62, 136,816.00 and 28,867.12

Step by Step Solution

1. Step 1: Write the proportion equation
   91,196.62 : 136,816.00 = 28,867.12 : x
2. Step 2: Convert to fraction form
   91,196.62/136,816.00 = 28,867.12/x
3. Step 3: Cross multiply
   91,196.62x = 136,816.00 × 28,867.12
4. Step 4: Simplify right side
   91,196.62x = 3,949,484,087.62
5. Step 5: Solve for x
   x = 3,949,484,087.62/91,196.62
6. Step 6: Final answer
   x = 43,307.35