Finding the Fourth Proportional to 277,200.48, 415,496.16 and 108,669.72

Step by Step Solution

1. Step 1: Write the proportion equation
   277,200.48 : 415,496.16 = 108,669.72 : x
2. Step 2: Convert to fraction form
   277,200.48/415,496.16 = 108,669.72/x
3. Step 3: Cross multiply
   277,200.48x = 415,496.16 × 108,669.72
4. Step 4: Simplify right side
   277,200.48x = 45,151,851,368.28
5. Step 5: Solve for x
   x = 45,151,851,368.28/277,200.48
6. Step 6: Final answer
   x = 162,885.18