Finding the Fourth Proportional to 69,106.72, 103,658.64 and 19,858.72

Step by Step Solution

1. Step 1: Write the proportion equation
   69,106.72 : 103,658.64 = 19,858.72 : x
2. Step 2: Convert to fraction form
   69,106.72/103,658.64 = 19,858.72/x
3. Step 3: Cross multiply
   69,106.72x = 103,658.64 × 19,858.72
4. Step 4: Simplify right side
   69,106.72x = 2,058,527,907.34
5. Step 5: Solve for x
   x = 2,058,527,907.34/69,106.72
6. Step 6: Final answer
   x = 29,787.67