Finding the Fourth Proportional to 66,145.67, 91,281.71 and 35,931.59

Step by Step Solution

1. Step 1: Write the proportion equation
   66,145.67 : 91,281.71 = 35,931.59 : x
2. Step 2: Convert to fraction form
   66,145.67/91,281.71 = 35,931.59/x
3. Step 3: Cross multiply
   66,145.67x = 91,281.71 × 35,931.59
4. Step 4: Simplify right side
   66,145.67x = 3,279,896,978.22
5. Step 5: Solve for x
   x = 3,279,896,978.22/66,145.67
6. Step 6: Final answer
   x = 49,585.97