Finding the Fourth Proportional to 67,807, 101,710.52 and 21,059.88

Step by Step Solution

1. Step 1: Write the proportion equation
   67,807 : 101,710.52 = 21,059.88 : x
2. Step 2: Convert to fraction form
   67,807/101,710.52 = 21,059.88/x
3. Step 3: Cross multiply
   67,807x = 101,710.52 × 21,059.88
4. Step 4: Simplify right side
   67,807x = 2,142,011,345.94
5. Step 5: Solve for x
   x = 2,142,011,345.94/67,807
6. Step 6: Final answer
   x = 31,589.83