Finding the Fourth Proportional to 111,931.16, 154,464.72 and 61,630.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111,931.16 : 154,464.72 = 61,630.16 : x
2. Step 2: Convert to fraction form
   111,931.16/154,464.72 = 61,630.16/x
3. Step 3: Cross multiply
   111,931.16x = 154,464.72 × 61,630.16
4. Step 4: Simplify right side
   111,931.16x = 9,519,685,407.96
5. Step 5: Solve for x
   x = 9,519,685,407.96/111,931.16
6. Step 6: Final answer
   x = 85,049.47