Finding the Fourth Proportional to 56,000.72, 83,991.36 and 19,064.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,000.72 : 83,991.36 = 19,064.72 : x
2. Step 2: Convert to fraction form
   56,000.72/83,991.36 = 19,064.72/x
3. Step 3: Cross multiply
   56,000.72x = 83,991.36 × 19,064.72
4. Step 4: Simplify right side
   56,000.72x = 1,601,271,760.82
5. Step 5: Solve for x
   x = 1,601,271,760.82/56,000.72
6. Step 6: Final answer
   x = 28,593.77