Finding the Fourth Proportional to 503,905,498.50, 756,155,854.71 and 212,753,775.18

Step by Step Solution

1. Step 1: Write the proportion equation
   503,905,498.50 : 756,155,854.71 = 212,753,775.18 : x
2. Step 2: Convert to fraction form
   503,905,498.50/756,155,854.71 = 212,753,775.18/x
3. Step 3: Cross multiply
   503,905,498.50x = 756,155,854.71 × 212,753,775.18
4. Step 4: Simplify right side
   503,905,498.50x = 160,875,012,714,012,096
5. Step 5: Solve for x
   x = 160,875,012,714,012,096/503,905,498.50
6. Step 6: Final answer
   x = 319,256,315.31