Finding the Fourth Proportional to 490,196.40, 735,345.72 and 135,210.48

Step by Step Solution

1. Step 1: Write the proportion equation
   490,196.40 : 735,345.72 = 135,210.48 : x
2. Step 2: Convert to fraction form
   490,196.40/735,345.72 = 135,210.48/x
3. Step 3: Cross multiply
   490,196.40x = 735,345.72 × 135,210.48
4. Step 4: Simplify right side
   490,196.40x = 99,426,447,767.15
5. Step 5: Solve for x
   x = 99,426,447,767.15/490,196.40
6. Step 6: Final answer
   x = 202,829.82