Finding the Fourth Proportional to 105,931.20, 146,184.72 and 58,187.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,931.20 : 146,184.72 = 58,187.52 : x
2. Step 2: Convert to fraction form
   105,931.20/146,184.72 = 58,187.52/x
3. Step 3: Cross multiply
   105,931.20x = 146,184.72 × 58,187.52
4. Step 4: Simplify right side
   105,931.20x = 8,506,126,318.69
5. Step 5: Solve for x
   x = 8,506,126,318.69/105,931.20
6. Step 6: Final answer
   x = 80,298.59