Finding the Fourth Proportional to 67,657.69, 101,499.29 and 20,899.63

Step by Step Solution

1. Step 1: Write the proportion equation
   67,657.69 : 101,499.29 = 20,899.63 : x
2. Step 2: Convert to fraction form
   67,657.69/101,499.29 = 20,899.63/x
3. Step 3: Cross multiply
   67,657.69x = 101,499.29 × 20,899.63
4. Step 4: Simplify right side
   67,657.69x = 2,121,296,994.27
5. Step 5: Solve for x
   x = 2,121,296,994.27/67,657.69
6. Step 6: Final answer
   x = 31,353.38