Finding the Fourth Proportional to 481,071,667.87, 663,878,901.80 and 261,055,093.87

Step by Step Solution

1. Step 1: Write the proportion equation
   481,071,667.87 : 663,878,901.80 = 261,055,093.87 : x
2. Step 2: Convert to fraction form
   481,071,667.87/663,878,901.80 = 261,055,093.87/x
3. Step 3: Cross multiply
   481,071,667.87x = 663,878,901.80 × 261,055,093.87
4. Step 4: Simplify right side
   481,071,667.87x = 173,308,969,026,580,448
5. Step 5: Solve for x
   x = 173,308,969,026,580,448/481,071,667.87
6. Step 6: Final answer
   x = 360,256,029.62