Finding the Fourth Proportional to 61,849.82, 85,314.39 and 54,290.18

Step by Step Solution

1. Step 1: Write the proportion equation
   61,849.82 : 85,314.39 = 54,290.18 : x
2. Step 2: Convert to fraction form
   61,849.82/85,314.39 = 54,290.18/x
3. Step 3: Cross multiply
   61,849.82x = 85,314.39 × 54,290.18
4. Step 4: Simplify right side
   61,849.82x = 4,631,733,589.69
5. Step 5: Solve for x
   x = 4,631,733,589.69/61,849.82
6. Step 6: Final answer
   x = 74,886.78