Finding the Fourth Proportional to 86,855.67, 130,079.34 and 42,342.93

Step by Step Solution

1. Step 1: Write the proportion equation
   86,855.67 : 130,079.34 = 42,342.93 : x
2. Step 2: Convert to fraction form
   86,855.67/130,079.34 = 42,342.93/x
3. Step 3: Cross multiply
   86,855.67x = 130,079.34 × 42,342.93
4. Step 4: Simplify right side
   86,855.67x = 5,507,940,388.07
5. Step 5: Solve for x
   x = 5,507,940,388.07/86,855.67
6. Step 6: Final answer
   x = 63,414.86