Finding the Fourth Proportional to 355,142.00, 532,791.72 and 102,402.78

Step by Step Solution

1. Step 1: Write the proportion equation
   355,142.00 : 532,791.72 = 102,402.78 : x
2. Step 2: Convert to fraction form
   355,142.00/532,791.72 = 102,402.78/x
3. Step 3: Cross multiply
   355,142.00x = 532,791.72 × 102,402.78
4. Step 4: Simplify right side
   355,142.00x = 54,559,353,288.98
5. Step 5: Solve for x
   x = 54,559,353,288.98/355,142.00
6. Step 6: Final answer
   x = 153,626.87