Finding the Fourth Proportional to 72,303.56, 99,782.72 and 45,436.12

Step by Step Solution

1. Step 1: Write the proportion equation
   72,303.56 : 99,782.72 = 45,436.12 : x
2. Step 2: Convert to fraction form
   72,303.56/99,782.72 = 45,436.12/x
3. Step 3: Cross multiply
   72,303.56x = 99,782.72 × 45,436.12
4. Step 4: Simplify right side
   72,303.56x = 4,533,739,639.85
5. Step 5: Solve for x
   x = 4,533,739,639.85/72,303.56
6. Step 6: Final answer
   x = 62,704.24