Finding the Fourth Proportional to 112,112.32, 154,722.72 and 64,379.20

Step by Step Solution

1. Step 1: Write the proportion equation
   112,112.32 : 154,722.72 = 64,379.20 : x
2. Step 2: Convert to fraction form
   112,112.32/154,722.72 = 64,379.20/x
3. Step 3: Cross multiply
   112,112.32x = 154,722.72 × 64,379.20
4. Step 4: Simplify right side
   112,112.32x = 9,960,924,935.42
5. Step 5: Solve for x
   x = 9,960,924,935.42/112,112.32
6. Step 6: Final answer
   x = 88,847.73