Finding the Fourth Proportional to 288,020,406.78, 397,425,404.32 and 174,931,049.05

Step by Step Solution

1. Step 1: Write the proportion equation
   288,020,406.78 : 397,425,404.32 = 174,931,049.05 : x
2. Step 2: Convert to fraction form
   288,020,406.78/397,425,404.32 = 174,931,049.05/x
3. Step 3: Cross multiply
   288,020,406.78x = 397,425,404.32 × 174,931,049.05
4. Step 4: Simplify right side
   288,020,406.78x = 69,522,042,896,818,008
5. Step 5: Solve for x
   x = 69,522,042,896,818,008/288,020,406.78
6. Step 6: Final answer
   x = 241,378,878.93