Finding the Fourth Proportional to 139,877.94, 209,999.82 and 83,055.60

Step by Step Solution

1. Step 1: Write the proportion equation
   139,877.94 : 209,999.82 = 83,055.60 : x
2. Step 2: Convert to fraction form
   139,877.94/209,999.82 = 83,055.60/x
3. Step 3: Cross multiply
   139,877.94x = 209,999.82 × 83,055.60
4. Step 4: Simplify right side
   139,877.94x = 17,441,661,049.99
5. Step 5: Solve for x
   x = 17,441,661,049.99/139,877.94
6. Step 6: Final answer
   x = 124,692.01