Finding the Fourth Proportional to 140,111.79, 210,152.16 and 50,150.91

Step by Step Solution

1. Step 1: Write the proportion equation
   140,111.79 : 210,152.16 = 50,150.91 : x
2. Step 2: Convert to fraction form
   140,111.79/210,152.16 = 50,150.91/x
3. Step 3: Cross multiply
   140,111.79x = 210,152.16 × 50,150.91
4. Step 4: Simplify right side
   140,111.79x = 10,539,322,062.47
5. Step 5: Solve for x
   x = 10,539,322,062.47/140,111.79
6. Step 6: Final answer
   x = 75,220.81