Finding the Fourth Proportional to 106,978.05, 147,634.33 and 59,231.40

Step by Step Solution

1. Step 1: Write the proportion equation
   106,978.05 : 147,634.33 = 59,231.40 : x
2. Step 2: Convert to fraction form
   106,978.05/147,634.33 = 59,231.40/x
3. Step 3: Cross multiply
   106,978.05x = 147,634.33 × 59,231.40
4. Step 4: Simplify right side
   106,978.05x = 8,744,588,053.96
5. Step 5: Solve for x
   x = 8,744,588,053.96/106,978.05
6. Step 6: Final answer
   x = 81,741.89