Finding the Fourth Proportional to 373,975,401.78, 516,088,648.53 and 208,969,925.94

Step by Step Solution

1. Step 1: Write the proportion equation
   373,975,401.78 : 516,088,648.53 = 208,969,925.94 : x
2. Step 2: Convert to fraction form
   373,975,401.78/516,088,648.53 = 208,969,925.94/x
3. Step 3: Cross multiply
   373,975,401.78x = 516,088,648.53 × 208,969,925.94
4. Step 4: Simplify right side
   373,975,401.78x = 107,847,006,661,788,784
5. Step 5: Solve for x
   x = 107,847,006,661,788,784/373,975,401.78
6. Step 6: Final answer
   x = 288,379,947.31