Finding the Fourth Proportional to 178,111.98, 245,752.38 and 105,478.20

Step by Step Solution

1. Step 1: Write the proportion equation
   178,111.98 : 245,752.38 = 105,478.20 : x
2. Step 2: Convert to fraction form
   178,111.98/245,752.38 = 105,478.20/x
3. Step 3: Cross multiply
   178,111.98x = 245,752.38 × 105,478.20
4. Step 4: Simplify right side
   178,111.98x = 25,921,518,688.12
5. Step 5: Solve for x
   x = 25,921,518,688.12/178,111.98
6. Step 6: Final answer
   x = 145,534.95