Finding the Fourth Proportional to 116,243.74, 160,421.68 and 64,561.04

Step by Step Solution

1. Step 1: Write the proportion equation
   116,243.74 : 160,421.68 = 64,561.04 : x
2. Step 2: Convert to fraction form
   116,243.74/160,421.68 = 64,561.04/x
3. Step 3: Cross multiply
   116,243.74x = 160,421.68 × 64,561.04
4. Step 4: Simplify right side
   116,243.74x = 10,356,990,499.35
5. Step 5: Solve for x
   x = 10,356,990,499.35/116,243.74
6. Step 6: Final answer
   x = 89,097.19