Finding the Fourth Proportional to 45,971.52, 68,961.27 and 12,691.59

Step by Step Solution

1. Step 1: Write the proportion equation
   45,971.52 : 68,961.27 = 12,691.59 : x
2. Step 2: Convert to fraction form
   45,971.52/68,961.27 = 12,691.59/x
3. Step 3: Cross multiply
   45,971.52x = 68,961.27 × 12,691.59
4. Step 4: Simplify right side
   45,971.52x = 875,228,164.72
5. Step 5: Solve for x
   x = 875,228,164.72/45,971.52
6. Step 6: Final answer
   x = 19,038.49