Finding the Fourth Proportional to 117,021.77, 175,426.02 and 42,124.31

Step by Step Solution

1. Step 1: Write the proportion equation
   117,021.77 : 175,426.02 = 42,124.31 : x
2. Step 2: Convert to fraction form
   117,021.77/175,426.02 = 42,124.31/x
3. Step 3: Cross multiply
   117,021.77x = 175,426.02 × 42,124.31
4. Step 4: Simplify right side
   117,021.77x = 7,389,699,171.42
5. Step 5: Solve for x
   x = 7,389,699,171.42/117,021.77
6. Step 6: Final answer
   x = 63,148.07