Finding the Fourth Proportional to 345,765, 477,155.70 and 186,789

Step by Step Solution

1. Step 1: Write the proportion equation
   345,765 : 477,155.70 = 186,789 : x
2. Step 2: Convert to fraction form
   345,765/477,155.70 = 186,789/x
3. Step 3: Cross multiply
   345,765x = 477,155.70 × 186,789
4. Step 4: Simplify right side
   345,765x = 89,127,436,047.30
5. Step 5: Solve for x
   x = 89,127,436,047.30/345,765
6. Step 6: Final answer
   x = 257,768.82