Finding the Fourth Proportional to 72,172, 99,597.36 and 43,877.69

Step by Step Solution

1. Step 1: Write the proportion equation
   72,172 : 99,597.36 = 43,877.69 : x
2. Step 2: Convert to fraction form
   72,172/99,597.36 = 43,877.69/x
3. Step 3: Cross multiply
   72,172x = 99,597.36 × 43,877.69
4. Step 4: Simplify right side
   72,172x = 4,370,102,086.90
5. Step 5: Solve for x
   x = 4,370,102,086.90/72,172
6. Step 6: Final answer
   x = 60,551.21