Finding the Fourth Proportional to 258,607.54, 387,925.88 and 78,698.82

Step by Step Solution

1. Step 1: Write the proportion equation
   258,607.54 : 387,925.88 = 78,698.82 : x
2. Step 2: Convert to fraction form
   258,607.54/387,925.88 = 78,698.82/x
3. Step 3: Cross multiply
   258,607.54x = 387,925.88 × 78,698.82
4. Step 4: Simplify right side
   258,607.54x = 30,529,308,435.96
5. Step 5: Solve for x
   x = 30,529,308,435.96/258,607.54
6. Step 6: Final answer
   x = 118,052.66