Finding the Fourth Proportional to 111,781.69, 154,261.16 and 61,480.69

Step by Step Solution

1. Step 1: Write the proportion equation
   111,781.69 : 154,261.16 = 61,480.69 : x
2. Step 2: Convert to fraction form
   111,781.69/154,261.16 = 61,480.69/x
3. Step 3: Cross multiply
   111,781.69x = 154,261.16 × 61,480.69
4. Step 4: Simplify right side
   111,781.69x = 9,484,082,094.50
5. Step 5: Solve for x
   x = 9,484,082,094.50/111,781.69
6. Step 6: Final answer
   x = 84,844.69