Finding the Fourth Proportional to 91,981,408.79, 138,008,920.41 and 37,398,189.89

Step by Step Solution

1. Step 1: Write the proportion equation
   91,981,408.79 : 138,008,920.41 = 37,398,189.89 : x
2. Step 2: Convert to fraction form
   91,981,408.79/138,008,920.41 = 37,398,189.89/x
3. Step 3: Cross multiply
   91,981,408.79x = 138,008,920.41 × 37,398,189.89
4. Step 4: Simplify right side
   91,981,408.79x = 5,161,283,811,317,032
5. Step 5: Solve for x
   x = 5,161,283,811,317,032/91,981,408.79
6. Step 6: Final answer
   x = 56,112,250.07