Finding the Fourth Proportional to 106,617, 147,144.42 and 61,905

Step by Step Solution

1. Step 1: Write the proportion equation
   106,617 : 147,144.42 = 61,905 : x
2. Step 2: Convert to fraction form
   106,617/147,144.42 = 61,905/x
3. Step 3: Cross multiply
   106,617x = 147,144.42 × 61,905
4. Step 4: Simplify right side
   106,617x = 9,108,975,320.10
5. Step 5: Solve for x
   x = 9,108,975,320.10/106,617
6. Step 6: Final answer
   x = 85,436.42