Finding the Fourth Proportional to 78,632.12, 108,508.86 and 42,819.99

Step by Step Solution

1. Step 1: Write the proportion equation
   78,632.12 : 108,508.86 = 42,819.99 : x
2. Step 2: Convert to fraction form
   78,632.12/108,508.86 = 42,819.99/x
3. Step 3: Cross multiply
   78,632.12x = 108,508.86 × 42,819.99
4. Step 4: Simplify right side
   78,632.12x = 4,646,348,300.11
5. Step 5: Solve for x
   x = 4,646,348,300.11/78,632.12
6. Step 6: Final answer
   x = 59,089.70