Finding the Fourth Proportional to 385,045.50, 577,801.56 and 163,429.50

Step by Step Solution

1. Step 1: Write the proportion equation
   385,045.50 : 577,801.56 = 163,429.50 : x
2. Step 2: Convert to fraction form
   385,045.50/577,801.56 = 163,429.50/x
3. Step 3: Cross multiply
   385,045.50x = 577,801.56 × 163,429.50
4. Step 4: Simplify right side
   385,045.50x = 94,429,820,050.02
5. Step 5: Solve for x
   x = 94,429,820,050.02/385,045.50
6. Step 6: Final answer
   x = 245,243.28