Finding the Fourth Proportional to 66,085.49, 91,198.06 and 35,870.81

Step by Step Solution

1. Step 1: Write the proportion equation
   66,085.49 : 91,198.06 = 35,870.81 : x
2. Step 2: Convert to fraction form
   66,085.49/91,198.06 = 35,870.81/x
3. Step 3: Cross multiply
   66,085.49x = 91,198.06 × 35,870.81
4. Step 4: Simplify right side
   66,085.49x = 3,271,348,192.95
5. Step 5: Solve for x
   x = 3,271,348,192.95/66,085.49
6. Step 6: Final answer
   x = 49,501.76