Finding the Fourth Proportional to 139,979.02, 210,010.91 and 50,009.94

Step by Step Solution

1. Step 1: Write the proportion equation
   139,979.02 : 210,010.91 = 50,009.94 : x
2. Step 2: Convert to fraction form
   139,979.02/210,010.91 = 50,009.94/x
3. Step 3: Cross multiply
   139,979.02x = 210,010.91 × 50,009.94
4. Step 4: Simplify right side
   139,979.02x = 10,502,633,008.45
5. Step 5: Solve for x
   x = 10,502,633,008.45/139,979.02
6. Step 6: Final answer
   x = 75,030.05