Finding the Fourth Proportional to 106,566.72, 147,066.96 and 61,259.40

Step by Step Solution

1. Step 1: Write the proportion equation
   106,566.72 : 147,066.96 = 61,259.40 : x
2. Step 2: Convert to fraction form
   106,566.72/147,066.96 = 61,259.40/x
3. Step 3: Cross multiply
   106,566.72x = 147,066.96 × 61,259.40
4. Step 4: Simplify right side
   106,566.72x = 9,009,233,729.42
5. Step 5: Solve for x
   x = 9,009,233,729.42/106,566.72
6. Step 6: Final answer
   x = 84,540.78