Finding the Fourth Proportional to 91,819.02, 137,599.20 and 73,015.62

Step by Step Solution

1. Step 1: Write the proportion equation
   91,819.02 : 137,599.20 = 73,015.62 : x
2. Step 2: Convert to fraction form
   91,819.02/137,599.20 = 73,015.62/x
3. Step 3: Cross multiply
   91,819.02x = 137,599.20 × 73,015.62
4. Step 4: Simplify right side
   91,819.02x = 10,046,890,899.50
5. Step 5: Solve for x
   x = 10,046,890,899.50/91,819.02
6. Step 6: Final answer
   x = 109,420.59