Finding the Fourth Proportional to 161,738.99, 223,196.83 and 90,117.47

Step by Step Solution

1. Step 1: Write the proportion equation
   161,738.99 : 223,196.83 = 90,117.47 : x
2. Step 2: Convert to fraction form
   161,738.99/223,196.83 = 90,117.47/x
3. Step 3: Cross multiply
   161,738.99x = 223,196.83 × 90,117.47
4. Step 4: Simplify right side
   161,738.99x = 20,113,933,631.62
5. Step 5: Solve for x
   x = 20,113,933,631.62/161,738.99
6. Step 6: Final answer
   x = 124,360.45