Finding the Fourth Proportional to 290,158.63, 435,097.86 and 121,633.69

Step by Step Solution

1. Step 1: Write the proportion equation
   290,158.63 : 435,097.86 = 121,633.69 : x
2. Step 2: Convert to fraction form
   290,158.63/435,097.86 = 121,633.69/x
3. Step 3: Cross multiply
   290,158.63x = 435,097.86 × 121,633.69
4. Step 4: Simplify right side
   290,158.63x = 52,922,558,222.90
5. Step 5: Solve for x
   x = 52,922,558,222.90/290,158.63
6. Step 6: Final answer
   x = 182,391.81