Finding the Fourth Proportional to 43,113.89, 64,670.72 and 13,533.94

Step by Step Solution

1. Step 1: Write the proportion equation
   43,113.89 : 64,670.72 = 13,533.94 : x
2. Step 2: Convert to fraction form
   43,113.89/64,670.72 = 13,533.94/x
3. Step 3: Cross multiply
   43,113.89x = 64,670.72 × 13,533.94
4. Step 4: Simplify right side
   43,113.89x = 875,249,644.24
5. Step 5: Solve for x
   x = 875,249,644.24/43,113.89
6. Step 6: Final answer
   x = 20,300.87