Finding the Fourth Proportional to 72,410.40, 99,972.96 and 59,013.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,410.40 : 99,972.96 = 59,013.72 : x
2. Step 2: Convert to fraction form
   72,410.40/99,972.96 = 59,013.72/x
3. Step 3: Cross multiply
   72,410.40x = 99,972.96 × 59,013.72
4. Step 4: Simplify right side
   72,410.40x = 5,899,776,269.01
5. Step 5: Solve for x
   x = 5,899,776,269.01/72,410.40
6. Step 6: Final answer
   x = 81,476.92