Finding the Fourth Proportional to 106,651.56, 147,162.24 and 61,320.72

Step by Step Solution

1. Step 1: Write the proportion equation
   106,651.56 : 147,162.24 = 61,320.72 : x
2. Step 2: Convert to fraction form
   106,651.56/147,162.24 = 61,320.72/x
3. Step 3: Cross multiply
   106,651.56x = 147,162.24 × 61,320.72
4. Step 4: Simplify right side
   106,651.56x = 9,024,094,513.61
5. Step 5: Solve for x
   x = 9,024,094,513.61/106,651.56
6. Step 6: Final answer
   x = 84,612.87