Finding the Fourth Proportional to 123,990.42, 186,003.14 and 39,730.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,990.42 : 186,003.14 = 39,730.88 : x
2. Step 2: Convert to fraction form
   123,990.42/186,003.14 = 39,730.88/x
3. Step 3: Cross multiply
   123,990.42x = 186,003.14 × 39,730.88
4. Step 4: Simplify right side
   123,990.42x = 7,390,068,434.96
5. Step 5: Solve for x
   x = 7,390,068,434.96/123,990.42
6. Step 6: Final answer
   x = 59,601.93