Finding the Fourth Proportional to 143,897.48, 215,864.34 and 49,145.60

Step by Step Solution

1. Step 1: Write the proportion equation
   143,897.48 : 215,864.34 = 49,145.60 : x
2. Step 2: Convert to fraction form
   143,897.48/215,864.34 = 49,145.60/x
3. Step 3: Cross multiply
   143,897.48x = 215,864.34 × 49,145.60
4. Step 4: Simplify right side
   143,897.48x = 10,608,782,507.90
5. Step 5: Solve for x
   x = 10,608,782,507.90/143,897.48
6. Step 6: Final answer
   x = 73,724.59