Finding the Fourth Proportional to 168,477.48, 252,715.20 and 42,117.12

Step by Step Solution

1. Step 1: Write the proportion equation
   168,477.48 : 252,715.20 = 42,117.12 : x
2. Step 2: Convert to fraction form
   168,477.48/252,715.20 = 42,117.12/x
3. Step 3: Cross multiply
   168,477.48x = 252,715.20 × 42,117.12
4. Step 4: Simplify right side
   168,477.48x = 10,643,636,404.22
5. Step 5: Solve for x
   x = 10,643,636,404.22/168,477.48
6. Step 6: Final answer
   x = 63,175.43