Finding the Fourth Proportional to 91,289.89, 136,934.81 and 34,374.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,289.89 : 136,934.81 = 34,374.50 : x
2. Step 2: Convert to fraction form
   91,289.89/136,934.81 = 34,374.50/x
3. Step 3: Cross multiply
   91,289.89x = 136,934.81 × 34,374.50
4. Step 4: Simplify right side
   91,289.89x = 4,707,065,626.35
5. Step 5: Solve for x
   x = 4,707,065,626.35/91,289.89
6. Step 6: Final answer
   x = 51,561.74