Finding the Fourth Proportional to 91,601.86, 137,401.70 and 51,623.86

Step by Step Solution

1. Step 1: Write the proportion equation
   91,601.86 : 137,401.70 = 51,623.86 : x
2. Step 2: Convert to fraction form
   91,601.86/137,401.70 = 51,623.86/x
3. Step 3: Cross multiply
   91,601.86x = 137,401.70 × 51,623.86
4. Step 4: Simplify right side
   91,601.86x = 7,093,206,124.56
5. Step 5: Solve for x
   x = 7,093,206,124.56/91,601.86
6. Step 6: Final answer
   x = 77,435.18