Finding the Fourth Proportional to 485,017,499.33, 727,515,744.72 and 135,254,234.78

Step by Step Solution

1. Step 1: Write the proportion equation
   485,017,499.33 : 727,515,744.72 = 135,254,234.78 : x
2. Step 2: Convert to fraction form
   485,017,499.33/727,515,744.72 = 135,254,234.78/x
3. Step 3: Cross multiply
   485,017,499.33x = 727,515,744.72 × 135,254,234.78
4. Step 4: Simplify right side
   485,017,499.33x = 98,399,585,338,867,856
5. Step 5: Solve for x
   x = 98,399,585,338,867,856/485,017,499.33
6. Step 6: Final answer
   x = 202,878,422.89