Finding the Fourth Proportional to 115,328.77, 159,153.77 and 64,341.50

Step by Step Solution

1. Step 1: Write the proportion equation
   115,328.77 : 159,153.77 = 64,341.50 : x
2. Step 2: Convert to fraction form
   115,328.77/159,153.77 = 64,341.50/x
3. Step 3: Cross multiply
   115,328.77x = 159,153.77 × 64,341.50
4. Step 4: Simplify right side
   115,328.77x = 10,240,191,476.58
5. Step 5: Solve for x
   x = 10,240,191,476.58/115,328.77
6. Step 6: Final answer
   x = 88,791.30