Finding the Fourth Proportional to 42,102.96, 58,076.84 and 30,758.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,102.96 : 58,076.84 = 30,758.56 : x
2. Step 2: Convert to fraction form
   42,102.96/58,076.84 = 30,758.56/x
3. Step 3: Cross multiply
   42,102.96x = 58,076.84 × 30,758.56
4. Step 4: Simplify right side
   42,102.96x = 1,786,359,967.75
5. Step 5: Solve for x
   x = 1,786,359,967.75/42,102.96
6. Step 6: Final answer
   x = 42,428.37