Finding the Fourth Proportional to 117,789.88, 162,545.34 and 64,074.96

Step by Step Solution

1. Step 1: Write the proportion equation
   117,789.88 : 162,545.34 = 64,074.96 : x
2. Step 2: Convert to fraction form
   117,789.88/162,545.34 = 64,074.96/x
3. Step 3: Cross multiply
   117,789.88x = 162,545.34 × 64,074.96
4. Step 4: Simplify right side
   117,789.88x = 10,415,086,158.69
5. Step 5: Solve for x
   x = 10,415,086,158.69/117,789.88
6. Step 6: Final answer
   x = 88,420.89