Finding the Fourth Proportional to 112,145.69, 154,759.10 and 61,158.81

Step by Step Solution

1. Step 1: Write the proportion equation
   112,145.69 : 154,759.10 = 61,158.81 : x
2. Step 2: Convert to fraction form
   112,145.69/154,759.10 = 61,158.81/x
3. Step 3: Cross multiply
   112,145.69x = 154,759.10 × 61,158.81
4. Step 4: Simplify right side
   112,145.69x = 9,464,882,086.88
5. Step 5: Solve for x
   x = 9,464,882,086.88/112,145.69
6. Step 6: Final answer
   x = 84,398.09