Finding the Fourth Proportional to 99,123,647.81, 136,782,614.82 and 57,310,395.72

Step by Step Solution

1. Step 1: Write the proportion equation
   99,123,647.81 : 136,782,614.82 = 57,310,395.72 : x
2. Step 2: Convert to fraction form
   99,123,647.81/136,782,614.82 = 57,310,395.72/x
3. Step 3: Cross multiply
   99,123,647.81x = 136,782,614.82 × 57,310,395.72
4. Step 4: Simplify right side
   99,123,647.81x = 7,839,065,782,950,536
5. Step 5: Solve for x
   x = 7,839,065,782,950,536/99,123,647.81
6. Step 6: Final answer
   x = 79,083,709.65