Finding the Fourth Proportional to 91,399.50, 126,145.98 and 53,666.46

Step by Step Solution

1. Step 1: Write the proportion equation
   91,399.50 : 126,145.98 = 53,666.46 : x
2. Step 2: Convert to fraction form
   91,399.50/126,145.98 = 53,666.46/x
3. Step 3: Cross multiply
   91,399.50x = 126,145.98 × 53,666.46
4. Step 4: Simplify right side
   91,399.50x = 6,769,808,189.83
5. Step 5: Solve for x
   x = 6,769,808,189.83/91,399.50
6. Step 6: Final answer
   x = 74,068.33