Finding the Fourth Proportional to 345,654, 477,002.52 and 186,678

Step by Step Solution

1. Step 1: Write the proportion equation
   345,654 : 477,002.52 = 186,678 : x
2. Step 2: Convert to fraction form
   345,654/477,002.52 = 186,678/x
3. Step 3: Cross multiply
   345,654x = 477,002.52 × 186,678
4. Step 4: Simplify right side
   345,654x = 89,045,876,428.56
5. Step 5: Solve for x
   x = 89,045,876,428.56/345,654
6. Step 6: Final answer
   x = 257,615.64