Finding the Fourth Proportional to 90,199.46, 135,345.89 and 65,443.84

Step by Step Solution

1. Step 1: Write the proportion equation
   90,199.46 : 135,345.89 = 65,443.84 : x
2. Step 2: Convert to fraction form
   90,199.46/135,345.89 = 65,443.84/x
3. Step 3: Cross multiply
   90,199.46x = 135,345.89 × 65,443.84
4. Step 4: Simplify right side
   90,199.46x = 8,857,554,769.82
5. Step 5: Solve for x
   x = 8,857,554,769.82/90,199.46
6. Step 6: Final answer
   x = 98,199.64