Finding the Fourth Proportional to 389,100.42, 536,835.06 and 307,168.92

Step by Step Solution

1. Step 1: Write the proportion equation
   389,100.42 : 536,835.06 = 307,168.92 : x
2. Step 2: Convert to fraction form
   389,100.42/536,835.06 = 307,168.92/x
3. Step 3: Cross multiply
   389,100.42x = 536,835.06 × 307,168.92
4. Step 4: Simplify right side
   389,100.42x = 164,899,045,598.34
5. Step 5: Solve for x
   x = 164,899,045,598.34/389,100.42
6. Step 6: Final answer
   x = 423,795.60