Finding the Fourth Proportional to 402,082.31, 602,946.32 and 188,910.81

Step by Step Solution

1. Step 1: Write the proportion equation
   402,082.31 : 602,946.32 = 188,910.81 : x
2. Step 2: Convert to fraction form
   402,082.31/602,946.32 = 188,910.81/x
3. Step 3: Cross multiply
   402,082.31x = 602,946.32 × 188,910.81
4. Step 4: Simplify right side
   402,082.31x = 113,903,077,697.72
5. Step 5: Solve for x
   x = 113,903,077,697.72/402,082.31
6. Step 6: Final answer
   x = 283,282.99