Finding the Fourth Proportional to 116,280, 174,446 and 42,408

Step by Step Solution

1. Step 1: Write the proportion equation
   116,280 : 174,446 = 42,408 : x
2. Step 2: Convert to fraction form
   116,280/174,446 = 42,408/x
3. Step 3: Cross multiply
   116,280x = 174,446 × 42,408
4. Step 4: Simplify right side
   116,280x = 7,397,905,968
5. Step 5: Solve for x
   x = 7,397,905,968/116,280
6. Step 6: Final answer
   x = 63,621.48