Finding the Fourth Proportional to 42,780.60, 64,189.02 and 23,036.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,780.60 : 64,189.02 = 23,036.10 : x
2. Step 2: Convert to fraction form
   42,780.60/64,189.02 = 23,036.10/x
3. Step 3: Cross multiply
   42,780.60x = 64,189.02 × 23,036.10
4. Step 4: Simplify right side
   42,780.60x = 1,478,664,683.62
5. Step 5: Solve for x
   x = 1,478,664,683.62/42,780.60
6. Step 6: Final answer
   x = 34,563.91