Finding the Fourth Proportional to 117,810.18, 162,581.50 and 64,098.65

Step by Step Solution

1. Step 1: Write the proportion equation
   117,810.18 : 162,581.50 = 64,098.65 : x
2. Step 2: Convert to fraction form
   117,810.18/162,581.50 = 64,098.65/x
3. Step 3: Cross multiply
   117,810.18x = 162,581.50 × 64,098.65
4. Step 4: Simplify right side
   117,810.18x = 10,421,254,664.98
5. Step 5: Solve for x
   x = 10,421,254,664.98/117,810.18
6. Step 6: Final answer
   x = 88,458.02