Finding the Fourth Proportional to 109,398.18, 151,019.89 and 64,069.86

Step by Step Solution

1. Step 1: Write the proportion equation
   109,398.18 : 151,019.89 = 64,069.86 : x
2. Step 2: Convert to fraction form
   109,398.18/151,019.89 = 64,069.86/x
3. Step 3: Cross multiply
   109,398.18x = 151,019.89 × 64,069.86
4. Step 4: Simplify right side
   109,398.18x = 9,675,823,209.52
5. Step 5: Solve for x
   x = 9,675,823,209.52/109,398.18
6. Step 6: Final answer
   x = 88,445.92