Finding the Fourth Proportional to 112,744.71, 155,587.37 and 64,997.64

Step by Step Solution

1. Step 1: Write the proportion equation
   112,744.71 : 155,587.37 = 64,997.64 : x
2. Step 2: Convert to fraction form
   112,744.71/155,587.37 = 64,997.64/x
3. Step 3: Cross multiply
   112,744.71x = 155,587.37 × 64,997.64
4. Step 4: Simplify right side
   112,744.71x = 10,112,811,538.82
5. Step 5: Solve for x
   x = 10,112,811,538.82/112,744.71
6. Step 6: Final answer
   x = 89,696.55