Finding the Fourth Proportional to 82,438.86, 113,729.50 and 48,432

Step by Step Solution

1. Step 1: Write the proportion equation
   82,438.86 : 113,729.50 = 48,432 : x
2. Step 2: Convert to fraction form
   82,438.86/113,729.50 = 48,432/x
3. Step 3: Cross multiply
   82,438.86x = 113,729.50 × 48,432
4. Step 4: Simplify right side
   82,438.86x = 5,508,147,144
5. Step 5: Solve for x
   x = 5,508,147,144/82,438.86
6. Step 6: Final answer
   x = 66,814.94