Finding the Fourth Proportional to 86,412.40, 129,588.90 and 42,010.54

Step by Step Solution

1. Step 1: Write the proportion equation
   86,412.40 : 129,588.90 = 42,010.54 : x
2. Step 2: Convert to fraction form
   86,412.40/129,588.90 = 42,010.54/x
3. Step 3: Cross multiply
   86,412.40x = 129,588.90 × 42,010.54
4. Step 4: Simplify right side
   86,412.40x = 5,444,099,667.01
5. Step 5: Solve for x
   x = 5,444,099,667.01/86,412.40
6. Step 6: Final answer
   x = 63,001.37