Finding the Fourth Proportional to 111,587.34, 153,991.62 and 61,286.34

Step by Step Solution

1. Step 1: Write the proportion equation
   111,587.34 : 153,991.62 = 61,286.34 : x
2. Step 2: Convert to fraction form
   111,587.34/153,991.62 = 61,286.34/x
3. Step 3: Cross multiply
   111,587.34x = 153,991.62 × 61,286.34
4. Step 4: Simplify right side
   111,587.34x = 9,437,582,780.47
5. Step 5: Solve for x
   x = 9,437,582,780.47/111,587.34
6. Step 6: Final answer
   x = 84,575.75