Finding the Fourth Proportional to 56,005.72, 83,998.86 and 19,069.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,005.72 : 83,998.86 = 19,069.72 : x
2. Step 2: Convert to fraction form
   56,005.72/83,998.86 = 19,069.72/x
3. Step 3: Cross multiply
   56,005.72x = 83,998.86 × 19,069.72
4. Step 4: Simplify right side
   56,005.72x = 1,601,834,740.52
5. Step 5: Solve for x
   x = 1,601,834,740.52/56,005.72
6. Step 6: Final answer
   x = 28,601.27