Finding the Fourth Proportional to 111,870.82, 154,388.62 and 64,131.35

Step by Step Solution

1. Step 1: Write the proportion equation
   111,870.82 : 154,388.62 = 64,131.35 : x
2. Step 2: Convert to fraction form
   111,870.82/154,388.62 = 64,131.35/x
3. Step 3: Cross multiply
   111,870.82x = 154,388.62 × 64,131.35
4. Step 4: Simplify right side
   111,870.82x = 9,901,149,853.29
5. Step 5: Solve for x
   x = 9,901,149,853.29/111,870.82
6. Step 6: Final answer
   x = 88,505.21