Finding the Fourth Proportional to 123,819.84, 185,742.72 and 40,720.32

Step by Step Solution

1. Step 1: Write the proportion equation
   123,819.84 : 185,742.72 = 40,720.32 : x
2. Step 2: Convert to fraction form
   123,819.84/185,742.72 = 40,720.32/x
3. Step 3: Cross multiply
   123,819.84x = 185,742.72 × 40,720.32
4. Step 4: Simplify right side
   123,819.84x = 7,563,502,996.07
5. Step 5: Solve for x
   x = 7,563,502,996.07/123,819.84
6. Step 6: Final answer
   x = 61,084.74