Finding the Fourth Proportional to 112,298.32, 154,981.16 and 64,568.08

Step by Step Solution

1. Step 1: Write the proportion equation
   112,298.32 : 154,981.16 = 64,568.08 : x
2. Step 2: Convert to fraction form
   112,298.32/154,981.16 = 64,568.08/x
3. Step 3: Cross multiply
   112,298.32x = 154,981.16 × 64,568.08
4. Step 4: Simplify right side
   112,298.32x = 10,006,835,937.37
5. Step 5: Solve for x
   x = 10,006,835,937.37/112,298.32
6. Step 6: Final answer
   x = 89,109.40