Finding the Fourth Proportional to 109,317.42, 150,895.78 and 64,009.98

Step by Step Solution

1. Step 1: Write the proportion equation
   109,317.42 : 150,895.78 = 64,009.98 : x
2. Step 2: Convert to fraction form
   109,317.42/150,895.78 = 64,009.98/x
3. Step 3: Cross multiply
   109,317.42x = 150,895.78 × 64,009.98
4. Step 4: Simplify right side
   109,317.42x = 9,658,835,699.86
5. Step 5: Solve for x
   x = 9,658,835,699.86/109,317.42
6. Step 6: Final answer
   x = 88,355.87