Finding the Fourth Proportional to 153,185.50, 229,791.21 and 42,377.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,185.50 : 229,791.21 = 42,377.50 : x
2. Step 2: Convert to fraction form
   153,185.50/229,791.21 = 42,377.50/x
3. Step 3: Cross multiply
   153,185.50x = 229,791.21 × 42,377.50
4. Step 4: Simplify right side
   153,185.50x = 9,737,977,001.78
5. Step 5: Solve for x
   x = 9,737,977,001.78/153,185.50
6. Step 6: Final answer
   x = 63,569.84