Finding the Fourth Proportional to 185,798.89, 256,403.82 and 100,915.98

Step by Step Solution

1. Step 1: Write the proportion equation
   185,798.89 : 256,403.82 = 100,915.98 : x
2. Step 2: Convert to fraction form
   185,798.89/256,403.82 = 100,915.98/x
3. Step 3: Cross multiply
   185,798.89x = 256,403.82 × 100,915.98
4. Step 4: Simplify right side
   185,798.89x = 25,875,242,771.04
5. Step 5: Solve for x
   x = 25,875,242,771.04/185,798.89
6. Step 6: Final answer
   x = 139,264.79