Finding the Fourth Proportional to 393,877.50, 590,878.72 and 141,152.54

Step by Step Solution

1. Step 1: Write the proportion equation
   393,877.50 : 590,878.72 = 141,152.54 : x
2. Step 2: Convert to fraction form
   393,877.50/590,878.72 = 141,152.54/x
3. Step 3: Cross multiply
   393,877.50x = 590,878.72 × 141,152.54
4. Step 4: Simplify right side
   393,877.50x = 83,404,032,159.95
5. Step 5: Solve for x
   x = 83,404,032,159.95/393,877.50
6. Step 6: Final answer
   x = 211,751.20