Finding the Fourth Proportional to 109,086.57, 150,536.47 and 61,338.69

Step by Step Solution

1. Step 1: Write the proportion equation
   109,086.57 : 150,536.47 = 61,338.69 : x
2. Step 2: Convert to fraction form
   109,086.57/150,536.47 = 61,338.69/x
3. Step 3: Cross multiply
   109,086.57x = 150,536.47 × 61,338.69
4. Step 4: Simplify right side
   109,086.57x = 9,233,709,867.02
5. Step 5: Solve for x
   x = 9,233,709,867.02/109,086.57
6. Step 6: Final answer
   x = 84,645.71