Finding the Fourth Proportional to 69,134.72, 103,684.80 and 19,886.72

Step by Step Solution

1. Step 1: Write the proportion equation
   69,134.72 : 103,684.80 = 19,886.72 : x
2. Step 2: Convert to fraction form
   69,134.72/103,684.80 = 19,886.72/x
3. Step 3: Cross multiply
   69,134.72x = 103,684.80 × 19,886.72
4. Step 4: Simplify right side
   69,134.72x = 2,061,950,585.86
5. Step 5: Solve for x
   x = 2,061,950,585.86/69,134.72
6. Step 6: Final answer
   x = 29,825.11