Finding the Fourth Proportional to 105,985.41, 146,261.03 and 58,238.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,985.41 : 146,261.03 = 58,238.76 : x
2. Step 2: Convert to fraction form
   105,985.41/146,261.03 = 58,238.76/x
3. Step 3: Cross multiply
   105,985.41x = 146,261.03 × 58,238.76
4. Step 4: Simplify right side
   105,985.41x = 8,518,061,280.81
5. Step 5: Solve for x
   x = 8,518,061,280.81/105,985.41
6. Step 6: Final answer
   x = 80,370.13