Finding the Fourth Proportional to 72,902.60, 109,094.70 and 50,611.40

Step by Step Solution

1. Step 1: Write the proportion equation
   72,902.60 : 109,094.70 = 50,611.40 : x
2. Step 2: Convert to fraction form
   72,902.60/109,094.70 = 50,611.40/x
3. Step 3: Cross multiply
   72,902.60x = 109,094.70 × 50,611.40
4. Step 4: Simplify right side
   72,902.60x = 5,521,435,499.58
5. Step 5: Solve for x
   x = 5,521,435,499.58/72,902.60
6. Step 6: Final answer
   x = 75,737.15