Finding the Fourth Proportional to 296,713,061.28, 445,133,865.12 and 89,434,132.98

Step by Step Solution

1. Step 1: Write the proportion equation
   296,713,061.28 : 445,133,865.12 = 89,434,132.98 : x
2. Step 2: Convert to fraction form
   296,713,061.28/445,133,865.12 = 89,434,132.98/x
3. Step 3: Cross multiply
   296,713,061.28x = 445,133,865.12 × 89,434,132.98
4. Step 4: Simplify right side
   296,713,061.28x = 39,810,161,287,043,464
5. Step 5: Solve for x
   x = 39,810,161,287,043,464/296,713,061.28
6. Step 6: Final answer
   x = 134,170,572.46