Finding the Fourth Proportional to 139,988.02, 210,024.42 and 50,018.95

Step by Step Solution

1. Step 1: Write the proportion equation
   139,988.02 : 210,024.42 = 50,018.95 : x
2. Step 2: Convert to fraction form
   139,988.02/210,024.42 = 50,018.95/x
3. Step 3: Cross multiply
   139,988.02x = 210,024.42 × 50,018.95
4. Step 4: Simplify right side
   139,988.02x = 10,505,200,962.76
5. Step 5: Solve for x
   x = 10,505,200,962.76/139,988.02
6. Step 6: Final answer
   x = 75,043.57