Finding the Fourth Proportional to 117,720.84, 162,454.62 and 64,005.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,720.84 : 162,454.62 = 64,005.72 : x
2. Step 2: Convert to fraction form
   117,720.84/162,454.62 = 64,005.72/x
3. Step 3: Cross multiply
   117,720.84x = 162,454.62 × 64,005.72
4. Step 4: Simplify right side
   117,720.84x = 10,398,024,920.43
5. Step 5: Solve for x
   x = 10,398,024,920.43/117,720.84
6. Step 6: Final answer
   x = 88,327.82