Finding the Fourth Proportional to 105,839.01, 146,055.75 and 59,897.80

Step by Step Solution

1. Step 1: Write the proportion equation
   105,839.01 : 146,055.75 = 59,897.80 : x
2. Step 2: Convert to fraction form
   105,839.01/146,055.75 = 59,897.80/x
3. Step 3: Cross multiply
   105,839.01x = 146,055.75 × 59,897.80
4. Step 4: Simplify right side
   105,839.01x = 8,748,418,172.61
5. Step 5: Solve for x
   x = 8,748,418,172.61/105,839.01
6. Step 6: Final answer
   x = 82,657.79