Finding the Fourth Proportional to 111,890.94, 154,404.96 and 64,111.08

Step by Step Solution

1. Step 1: Write the proportion equation
   111,890.94 : 154,404.96 = 64,111.08 : x
2. Step 2: Convert to fraction form
   111,890.94/154,404.96 = 64,111.08/x
3. Step 3: Cross multiply
   111,890.94x = 154,404.96 × 64,111.08
4. Step 4: Simplify right side
   111,890.94x = 9,899,068,742.96
5. Step 5: Solve for x
   x = 9,899,068,742.96/111,890.94
6. Step 6: Final answer
   x = 88,470.69