Finding the Fourth Proportional to 111,800.25, 154,287.59 and 61,499.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111,800.25 : 154,287.59 = 61,499.25 : x
2. Step 2: Convert to fraction form
   111,800.25/154,287.59 = 61,499.25/x
3. Step 3: Cross multiply
   111,800.25x = 154,287.59 × 61,499.25
4. Step 4: Simplify right side
   111,800.25x = 9,488,570,761.81
5. Step 5: Solve for x
   x = 9,488,570,761.81/111,800.25
6. Step 6: Final answer
   x = 84,870.75