Finding the Fourth Proportional to 72,007.61, 99,388.28 and 43,736.99

Step by Step Solution

1. Step 1: Write the proportion equation
   72,007.61 : 99,388.28 = 43,736.99 : x
2. Step 2: Convert to fraction form
   72,007.61/99,388.28 = 43,736.99/x
3. Step 3: Cross multiply
   72,007.61x = 99,388.28 × 43,736.99
4. Step 4: Simplify right side
   72,007.61x = 4,346,943,820.88
5. Step 5: Solve for x
   x = 4,346,943,820.88/72,007.61
6. Step 6: Final answer
   x = 60,367.84