Finding the Fourth Proportional to 105,938.53, 146,159.53 and 59,991.89

Step by Step Solution

1. Step 1: Write the proportion equation
   105,938.53 : 146,159.53 = 59,991.89 : x
2. Step 2: Convert to fraction form
   105,938.53/146,159.53 = 59,991.89/x
3. Step 3: Cross multiply
   105,938.53x = 146,159.53 × 59,991.89
4. Step 4: Simplify right side
   105,938.53x = 8,768,385,565.43
5. Step 5: Solve for x
   x = 8,768,385,565.43/105,938.53
6. Step 6: Final answer
   x = 82,768.62