Finding the Fourth Proportional to 83,369.58, 115,105.01 and 64,215.51

Step by Step Solution

1. Step 1: Write the proportion equation
   83,369.58 : 115,105.01 = 64,215.51 : x
2. Step 2: Convert to fraction form
   83,369.58/115,105.01 = 64,215.51/x
3. Step 3: Cross multiply
   83,369.58x = 115,105.01 × 64,215.51
4. Step 4: Simplify right side
   83,369.58x = 7,391,526,920.71
5. Step 5: Solve for x
   x = 7,391,526,920.71/83,369.58
6. Step 6: Final answer
   x = 88,659.76