Finding the Fourth Proportional to 72,206.34, 99,669.84 and 49,620.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,206.34 : 99,669.84 = 49,620.10 : x
2. Step 2: Convert to fraction form
   72,206.34/99,669.84 = 49,620.10/x
3. Step 3: Cross multiply
   72,206.34x = 99,669.84 × 49,620.10
4. Step 4: Simplify right side
   72,206.34x = 4,945,627,427.78
5. Step 5: Solve for x
   x = 4,945,627,427.78/72,206.34
6. Step 6: Final answer
   x = 68,492.98