Finding the Fourth Proportional to 105,978.76, 146,250.80 and 58,234.93

Step by Step Solution

1. Step 1: Write the proportion equation
   105,978.76 : 146,250.80 = 58,234.93 : x
2. Step 2: Convert to fraction form
   105,978.76/146,250.80 = 58,234.93/x
3. Step 3: Cross multiply
   105,978.76x = 146,250.80 × 58,234.93
4. Step 4: Simplify right side
   105,978.76x = 8,516,904,662.02
5. Step 5: Solve for x
   x = 8,516,904,662.02/105,978.76
6. Step 6: Final answer
   x = 80,364.26