Finding the Fourth Proportional to 91,953, 137,124.82 and 91,112.21

Step by Step Solution

1. Step 1: Write the proportion equation
   91,953 : 137,124.82 = 91,112.21 : x
2. Step 2: Convert to fraction form
   91,953/137,124.82 = 91,112.21/x
3. Step 3: Cross multiply
   91,953x = 137,124.82 × 91,112.21
4. Step 4: Simplify right side
   91,953x = 12,493,745,338.54
5. Step 5: Solve for x
   x = 12,493,745,338.54/91,953
6. Step 6: Final answer
   x = 135,870.99