Finding the Fourth Proportional to 300,788,849.64, 415,224,621.54 and 189,443,333.80

Step by Step Solution

1. Step 1: Write the proportion equation
   300,788,849.64 : 415,224,621.54 = 189,443,333.80 : x
2. Step 2: Convert to fraction form
   300,788,849.64/415,224,621.54 = 189,443,333.80/x
3. Step 3: Cross multiply
   300,788,849.64x = 415,224,621.54 × 189,443,333.80
4. Step 4: Simplify right side
   300,788,849.64x = 78,661,536,580,380,896
5. Step 5: Solve for x
   x = 78,661,536,580,380,896/300,788,849.64
6. Step 6: Final answer
   x = 261,517,462.08