Finding the Fourth Proportional to 78,250.32, 107,983.80 and 42,438.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,250.32 : 107,983.80 = 42,438.96 : x
2. Step 2: Convert to fraction form
   78,250.32/107,983.80 = 42,438.96/x
3. Step 3: Cross multiply
   78,250.32x = 107,983.80 × 42,438.96
4. Step 4: Simplify right side
   78,250.32x = 4,582,720,168.85
5. Step 5: Solve for x
   x = 4,582,720,168.85/78,250.32
6. Step 6: Final answer
   x = 58,564.87