Finding the Fourth Proportional to 72,173.25, 99,642.83 and 47,066.49

Step by Step Solution

1. Step 1: Write the proportion equation
   72,173.25 : 99,642.83 = 47,066.49 : x
2. Step 2: Convert to fraction form
   72,173.25/99,642.83 = 47,066.49/x
3. Step 3: Cross multiply
   72,173.25x = 99,642.83 × 47,066.49
4. Step 4: Simplify right side
   72,173.25x = 4,689,838,026.43
5. Step 5: Solve for x
   x = 4,689,838,026.43/72,173.25
6. Step 6: Final answer
   x = 64,980.28