Finding the Fourth Proportional to 117,139.50, 175,602.33 and 42,198.30

Step by Step Solution

1. Step 1: Write the proportion equation
   117,139.50 : 175,602.33 = 42,198.30 : x
2. Step 2: Convert to fraction form
   117,139.50/175,602.33 = 42,198.30/x
3. Step 3: Cross multiply
   117,139.50x = 175,602.33 × 42,198.30
4. Step 4: Simplify right side
   117,139.50x = 7,410,119,802.04
5. Step 5: Solve for x
   x = 7,410,119,802.04/117,139.50
6. Step 6: Final answer
   x = 63,258.93