Finding the Fourth Proportional to 186,055.72, 256,751.52 and 105,490.72

Step by Step Solution

1. Step 1: Write the proportion equation
   186,055.72 : 256,751.52 = 105,490.72 : x
2. Step 2: Convert to fraction form
   186,055.72/256,751.52 = 105,490.72/x
3. Step 3: Cross multiply
   186,055.72x = 256,751.52 × 105,490.72
4. Step 4: Simplify right side
   186,055.72x = 27,084,902,705.89
5. Step 5: Solve for x
   x = 27,084,902,705.89/186,055.72
6. Step 6: Final answer
   x = 145,574.15