Finding the Fourth Proportional to 111,974.54, 167,142.55 and 98,688.98

Step by Step Solution

1. Step 1: Write the proportion equation
   111,974.54 : 167,142.55 = 98,688.98 : x
2. Step 2: Convert to fraction form
   111,974.54/167,142.55 = 98,688.98/x
3. Step 3: Cross multiply
   111,974.54x = 167,142.55 × 98,688.98
4. Step 4: Simplify right side
   111,974.54x = 16,495,127,774.10
5. Step 5: Solve for x
   x = 16,495,127,774.10/111,974.54
6. Step 6: Final answer
   x = 147,311.41