Finding the Fourth Proportional to 278,499,552.16, 417,059,798.52 and 204,547,970.69

Step by Step Solution

1. Step 1: Write the proportion equation
   278,499,552.16 : 417,059,798.52 = 204,547,970.69 : x
2. Step 2: Convert to fraction form
   278,499,552.16/417,059,798.52 = 204,547,970.69/x
3. Step 3: Cross multiply
   278,499,552.16x = 417,059,798.52 × 204,547,970.69
4. Step 4: Simplify right side
   278,499,552.16x = 85,308,735,442,740,384
5. Step 5: Solve for x
   x = 85,308,735,442,740,384/278,499,552.16
6. Step 6: Final answer
   x = 306,315,521.09