Finding the Fourth Proportional to 438,739.61, 658,106.37 and 123,196.82

Step by Step Solution

1. Step 1: Write the proportion equation
   438,739.61 : 658,106.37 = 123,196.82 : x
2. Step 2: Convert to fraction form
   438,739.61/658,106.37 = 123,196.82/x
3. Step 3: Cross multiply
   438,739.61x = 658,106.37 × 123,196.82
4. Step 4: Simplify right side
   438,739.61x = 81,076,608,715.21
5. Step 5: Solve for x
   x = 81,076,608,715.21/438,739.61
6. Step 6: Final answer
   x = 184,794.37