Finding the Fourth Proportional to 307,436, 424,268.16 and 173,300

Step by Step Solution

1. Step 1: Write the proportion equation
   307,436 : 424,268.16 = 173,300 : x
2. Step 2: Convert to fraction form
   307,436/424,268.16 = 173,300/x
3. Step 3: Cross multiply
   307,436x = 424,268.16 × 173,300
4. Step 4: Simplify right side
   307,436x = 73,525,672,128
5. Step 5: Solve for x
   x = 73,525,672,128/307,436
6. Step 6: Final answer
   x = 239,157.65