Finding the Fourth Proportional to 67,801.30, 101,700.86 and 21,054.22

Step by Step Solution

1. Step 1: Write the proportion equation
   67,801.30 : 101,700.86 = 21,054.22 : x
2. Step 2: Convert to fraction form
   67,801.30/101,700.86 = 21,054.22/x
3. Step 3: Cross multiply
   67,801.30x = 101,700.86 × 21,054.22
4. Step 4: Simplify right side
   67,801.30x = 2,141,232,280.63
5. Step 5: Solve for x
   x = 2,141,232,280.63/67,801.30
6. Step 6: Final answer
   x = 31,580.99