Finding the Fourth Proportional to 89,384.01, 133,871.90 and 42,669.69

Step by Step Solution

1. Step 1: Write the proportion equation
   89,384.01 : 133,871.90 = 42,669.69 : x
2. Step 2: Convert to fraction form
   89,384.01/133,871.90 = 42,669.69/x
3. Step 3: Cross multiply
   89,384.01x = 133,871.90 × 42,669.69
4. Step 4: Simplify right side
   89,384.01x = 5,712,272,259.36
5. Step 5: Solve for x
   x = 5,712,272,259.36/89,384.01
6. Step 6: Final answer
   x = 63,907.09