Finding the Fourth Proportional to 181,498.35, 250,473.79 and 99,830.05

Step by Step Solution

1. Step 1: Write the proportion equation
   181,498.35 : 250,473.79 = 99,830.05 : x
2. Step 2: Convert to fraction form
   181,498.35/250,473.79 = 99,830.05/x
3. Step 3: Cross multiply
   181,498.35x = 250,473.79 × 99,830.05
4. Step 4: Simplify right side
   181,498.35x = 25,004,810,979.39
5. Step 5: Solve for x
   x = 25,004,810,979.39/181,498.35
6. Step 6: Final answer
   x = 137,768.81