Finding the Fourth Proportional to 78,808.14, 108,755.91 and 42,998.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,808.14 : 108,755.91 = 42,998.31 : x
2. Step 2: Convert to fraction form
   78,808.14/108,755.91 = 42,998.31/x
3. Step 3: Cross multiply
   78,808.14x = 108,755.91 × 42,998.31
4. Step 4: Simplify right side
   78,808.14x = 4,676,320,332.51
5. Step 5: Solve for x
   x = 4,676,320,332.51/78,808.14
6. Step 6: Final answer
   x = 59,338.04