Finding the Fourth Proportional to 86,607.98, 129,807.33 and 42,168.14

Step by Step Solution

1. Step 1: Write the proportion equation
   86,607.98 : 129,807.33 = 42,168.14 : x
2. Step 2: Convert to fraction form
   86,607.98/129,807.33 = 42,168.14/x
3. Step 3: Cross multiply
   86,607.98x = 129,807.33 × 42,168.14
4. Step 4: Simplify right side
   86,607.98x = 5,473,733,664.47
5. Step 5: Solve for x
   x = 5,473,733,664.47/86,607.98
6. Step 6: Final answer
   x = 63,201.26