Finding the Fourth Proportional to 117,935.72, 162,751.30 and 64,220.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,935.72 : 162,751.30 = 64,220.72 : x
2. Step 2: Convert to fraction form
   117,935.72/162,751.30 = 64,220.72/x
3. Step 3: Cross multiply
   117,935.72x = 162,751.30 × 64,220.72
4. Step 4: Simplify right side
   117,935.72x = 10,452,004,692.63
5. Step 5: Solve for x
   x = 10,452,004,692.63/117,935.72
6. Step 6: Final answer
   x = 88,624.59