Finding the Fourth Proportional to 111,577.16, 153,976.31 and 61,276.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111,577.16 : 153,976.31 = 61,276.16 : x
2. Step 2: Convert to fraction form
   111,577.16/153,976.31 = 61,276.16/x
3. Step 3: Cross multiply
   111,577.16x = 153,976.31 × 61,276.16
4. Step 4: Simplify right side
   111,577.16x = 9,435,077,086.33
5. Step 5: Solve for x
   x = 9,435,077,086.33/111,577.16
6. Step 6: Final answer
   x = 84,561.01