Finding the Fourth Proportional to 109,638.66, 151,275.69 and 64,314.30

Step by Step Solution

1. Step 1: Write the proportion equation
   109,638.66 : 151,275.69 = 64,314.30 : x
2. Step 2: Convert to fraction form
   109,638.66/151,275.69 = 64,314.30/x
3. Step 3: Cross multiply
   109,638.66x = 151,275.69 × 64,314.30
4. Step 4: Simplify right side
   109,638.66x = 9,729,190,109.37
5. Step 5: Solve for x
   x = 9,729,190,109.37/109,638.66
6. Step 6: Final answer
   x = 88,738.68