Finding the Fourth Proportional to 105,758.58, 145,945.94 and 58,011.06

Step by Step Solution

1. Step 1: Write the proportion equation
   105,758.58 : 145,945.94 = 58,011.06 : x
2. Step 2: Convert to fraction form
   105,758.58/145,945.94 = 58,011.06/x
3. Step 3: Cross multiply
   105,758.58x = 145,945.94 × 58,011.06
4. Step 4: Simplify right side
   105,758.58x = 8,466,478,682.10
5. Step 5: Solve for x
   x = 8,466,478,682.10/105,758.58
6. Step 6: Final answer
   x = 80,054.77