Finding the Fourth Proportional to 42,830.06, 64,129.17 and 30,298.46

Step by Step Solution

1. Step 1: Write the proportion equation
   42,830.06 : 64,129.17 = 30,298.46 : x
2. Step 2: Convert to fraction form
   42,830.06/64,129.17 = 30,298.46/x
3. Step 3: Cross multiply
   42,830.06x = 64,129.17 × 30,298.46
4. Step 4: Simplify right side
   42,830.06x = 1,943,015,092.08
5. Step 5: Solve for x
   x = 1,943,015,092.08/42,830.06
6. Step 6: Final answer
   x = 45,365.69