Finding the Fourth Proportional to 72,740.37, 108,958.28 and 58,620.45

Step by Step Solution

1. Step 1: Write the proportion equation
   72,740.37 : 108,958.28 = 58,620.45 : x
2. Step 2: Convert to fraction form
   72,740.37/108,958.28 = 58,620.45/x
3. Step 3: Cross multiply
   72,740.37x = 108,958.28 × 58,620.45
4. Step 4: Simplify right side
   72,740.37x = 6,387,183,111.72
5. Step 5: Solve for x
   x = 6,387,183,111.72/72,740.37
6. Step 6: Final answer
   x = 87,807.95