Finding the Fourth Proportional to 72,903.89, 100,609.47 and 42,686.37

Step by Step Solution

1. Step 1: Write the proportion equation
   72,903.89 : 100,609.47 = 42,686.37 : x
2. Step 2: Convert to fraction form
   72,903.89/100,609.47 = 42,686.37/x
3. Step 3: Cross multiply
   72,903.89x = 100,609.47 × 42,686.37
4. Step 4: Simplify right side
   72,903.89x = 4,294,653,061.92
5. Step 5: Solve for x
   x = 4,294,653,061.92/72,903.89
6. Step 6: Final answer
   x = 58,908.43