Finding the Fourth Proportional to 72,056.79, 99,440.04 and 45,200.43

Step by Step Solution

1. Step 1: Write the proportion equation
   72,056.79 : 99,440.04 = 45,200.43 : x
2. Step 2: Convert to fraction form
   72,056.79/99,440.04 = 45,200.43/x
3. Step 3: Cross multiply
   72,056.79x = 99,440.04 × 45,200.43
4. Step 4: Simplify right side
   72,056.79x = 4,494,732,567.22
5. Step 5: Solve for x
   x = 4,494,732,567.22/72,056.79
6. Step 6: Final answer
   x = 62,377.64