Finding the Fourth Proportional to 208,077,162.45, 287,146,459.58 and 124,445,280.15

Step by Step Solution

1. Step 1: Write the proportion equation
   208,077,162.45 : 287,146,459.58 = 124,445,280.15 : x
2. Step 2: Convert to fraction form
   208,077,162.45/287,146,459.58 = 124,445,280.15/x
3. Step 3: Cross multiply
   208,077,162.45x = 287,146,459.58 × 124,445,280.15
4. Step 4: Simplify right side
   208,077,162.45x = 35,734,021,605,891,524
5. Step 5: Solve for x
   x = 35,734,021,605,891,524/208,077,162.45
6. Step 6: Final answer
   x = 171,734,471.89