Finding the Fourth Proportional to 297,064,392.56, 445,414,900.55 and 141,665,729.75

Step by Step Solution

1. Step 1: Write the proportion equation
   297,064,392.56 : 445,414,900.55 = 141,665,729.75 : x
2. Step 2: Convert to fraction form
   297,064,392.56/445,414,900.55 = 141,665,729.75/x
3. Step 3: Cross multiply
   297,064,392.56x = 445,414,900.55 × 141,665,729.75
4. Step 4: Simplify right side
   297,064,392.56x = 63,100,026,926,674,328
5. Step 5: Solve for x
   x = 63,100,026,926,674,328/297,064,392.56
6. Step 6: Final answer
   x = 212,411,950.09