Finding the Fourth Proportional to 91,700.20, 137,861.34 and 73,216.36

Step by Step Solution

1. Step 1: Write the proportion equation
   91,700.20 : 137,861.34 = 73,216.36 : x
2. Step 2: Convert to fraction form
   91,700.20/137,861.34 = 73,216.36/x
3. Step 3: Cross multiply
   91,700.20x = 137,861.34 × 73,216.36
4. Step 4: Simplify right side
   91,700.20x = 10,093,705,499.52
5. Step 5: Solve for x
   x = 10,093,705,499.52/91,700.20
6. Step 6: Final answer
   x = 110,072.88