Finding the Fourth Proportional to 139,056.73, 208,492.95 and 50,298.55

Step by Step Solution

1. Step 1: Write the proportion equation
   139,056.73 : 208,492.95 = 50,298.55 : x
2. Step 2: Convert to fraction form
   139,056.73/208,492.95 = 50,298.55/x
3. Step 3: Cross multiply
   139,056.73x = 208,492.95 × 50,298.55
4. Step 4: Simplify right side
   139,056.73x = 10,486,893,070.22
5. Step 5: Solve for x
   x = 10,486,893,070.22/139,056.73
6. Step 6: Final answer
   x = 75,414.50