Finding the Fourth Proportional to 336,328.72, 504,478.50 and 83,603.86

Step by Step Solution

1. Step 1: Write the proportion equation
   336,328.72 : 504,478.50 = 83,603.86 : x
2. Step 2: Convert to fraction form
   336,328.72/504,478.50 = 83,603.86/x
3. Step 3: Cross multiply
   336,328.72x = 504,478.50 × 83,603.86
4. Step 4: Simplify right side
   336,328.72x = 42,176,349,887.01
5. Step 5: Solve for x
   x = 42,176,349,887.01/336,328.72
6. Step 6: Final answer
   x = 125,402.17