Finding the Fourth Proportional to 168,900.32, 253,331.62 and 42,540.53

Step by Step Solution

1. Step 1: Write the proportion equation
   168,900.32 : 253,331.62 = 42,540.53 : x
2. Step 2: Convert to fraction form
   168,900.32/253,331.62 = 42,540.53/x
3. Step 3: Cross multiply
   168,900.32x = 253,331.62 × 42,540.53
4. Step 4: Simplify right side
   168,900.32x = 10,776,860,007.55
5. Step 5: Solve for x
   x = 10,776,860,007.55/168,900.32
6. Step 6: Final answer
   x = 63,806.04