Finding the Fourth Proportional to 72,477.18, 99,980.73 and 45,568.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72,477.18 : 99,980.73 = 45,568.98 : x
2. Step 2: Convert to fraction form
   72,477.18/99,980.73 = 45,568.98/x
3. Step 3: Cross multiply
   72,477.18x = 99,980.73 × 45,568.98
4. Step 4: Simplify right side
   72,477.18x = 4,556,019,885.76
5. Step 5: Solve for x
   x = 4,556,019,885.76/72,477.18
6. Step 6: Final answer
   x = 62,861.44