Finding the Fourth Proportional to 64,505.83, 89,017.69 and 36,211.51

Step by Step Solution

1. Step 1: Write the proportion equation
   64,505.83 : 89,017.69 = 36,211.51 : x
2. Step 2: Convert to fraction form
   64,505.83/89,017.69 = 36,211.51/x
3. Step 3: Cross multiply
   64,505.83x = 89,017.69 × 36,211.51
4. Step 4: Simplify right side
   64,505.83x = 3,223,464,971.61
5. Step 5: Solve for x
   x = 3,223,464,971.61/64,505.83
6. Step 6: Final answer
   x = 49,971.68