Finding the Fourth Proportional to 139,884.88, 209,937.88 and 61,054.48

Step by Step Solution

1. Step 1: Write the proportion equation
   139,884.88 : 209,937.88 = 61,054.48 : x
2. Step 2: Convert to fraction form
   139,884.88/209,937.88 = 61,054.48/x
3. Step 3: Cross multiply
   139,884.88x = 209,937.88 × 61,054.48
4. Step 4: Simplify right side
   139,884.88x = 12,817,648,095.70
5. Step 5: Solve for x
   x = 12,817,648,095.70/139,884.88
6. Step 6: Final answer
   x = 91,629.98