Finding the Fourth Proportional to 99,290.25, 136,926.25 and 65,327.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,290.25 : 136,926.25 = 65,327.56 : x
2. Step 2: Convert to fraction form
   99,290.25/136,926.25 = 65,327.56/x
3. Step 3: Cross multiply
   99,290.25x = 136,926.25 × 65,327.56
4. Step 4: Simplify right side
   99,290.25x = 8,945,057,306.82
5. Step 5: Solve for x
   x = 8,945,057,306.82/99,290.25
6. Step 6: Final answer
   x = 90,089.99