Finding the Fourth Proportional to 69,133.72, 103,683.30 and 19,885.72

Step by Step Solution

1. Step 1: Write the proportion equation
   69,133.72 : 103,683.30 = 19,885.72 : x
2. Step 2: Convert to fraction form
   69,133.72/103,683.30 = 19,885.72/x
3. Step 3: Cross multiply
   69,133.72x = 103,683.30 × 19,885.72
4. Step 4: Simplify right side
   69,133.72x = 2,061,817,072.48
5. Step 5: Solve for x
   x = 2,061,817,072.48/69,133.72
6. Step 6: Final answer
   x = 29,823.61