Finding the Fourth Proportional to 116,643, 174,990.42 and 42,771

Step by Step Solution

1. Step 1: Write the proportion equation
   116,643 : 174,990.42 = 42,771 : x
2. Step 2: Convert to fraction form
   116,643/174,990.42 = 42,771/x
3. Step 3: Cross multiply
   116,643x = 174,990.42 × 42,771
4. Step 4: Simplify right side
   116,643x = 7,484,515,253.82
5. Step 5: Solve for x
   x = 7,484,515,253.82/116,643
6. Step 6: Final answer
   x = 64,166.00