Finding the Fourth Proportional to 42,656.59, 64,019.67 and 30,188.62

Step by Step Solution

1. Step 1: Write the proportion equation
   42,656.59 : 64,019.67 = 30,188.62 : x
2. Step 2: Convert to fraction form
   42,656.59/64,019.67 = 30,188.62/x
3. Step 3: Cross multiply
   42,656.59x = 64,019.67 × 30,188.62
4. Step 4: Simplify right side
   42,656.59x = 1,932,665,490.16
5. Step 5: Solve for x
   x = 1,932,665,490.16/42,656.59
6. Step 6: Final answer
   x = 45,307.55