Finding the Fourth Proportional to 116,278, 174,443 and 42,406

Step by Step Solution

1. Step 1: Write the proportion equation
   116,278 : 174,443 = 42,406 : x
2. Step 2: Convert to fraction form
   116,278/174,443 = 42,406/x
3. Step 3: Cross multiply
   116,278x = 174,443 × 42,406
4. Step 4: Simplify right side
   116,278x = 7,397,429,858
5. Step 5: Solve for x
   x = 7,397,429,858/116,278
6. Step 6: Final answer
   x = 63,618.48