Finding the Fourth Proportional to 74,773.10, 103,133.61 and 72,301.79

Step by Step Solution

1. Step 1: Write the proportion equation
   74,773.10 : 103,133.61 = 72,301.79 : x
2. Step 2: Convert to fraction form
   74,773.10/103,133.61 = 72,301.79/x
3. Step 3: Cross multiply
   74,773.10x = 103,133.61 × 72,301.79
4. Step 4: Simplify right side
   74,773.10x = 7,456,744,096.49
5. Step 5: Solve for x
   x = 7,456,744,096.49/74,773.10
6. Step 6: Final answer
   x = 99,724.96