Finding the Fourth Proportional to 74,720.17, 103,112.48 and 42,886.56

Step by Step Solution

1. Step 1: Write the proportion equation
   74,720.17 : 103,112.48 = 42,886.56 : x
2. Step 2: Convert to fraction form
   74,720.17/103,112.48 = 42,886.56/x
3. Step 3: Cross multiply
   74,720.17x = 103,112.48 × 42,886.56
4. Step 4: Simplify right side
   74,720.17x = 4,422,139,667.49
5. Step 5: Solve for x
   x = 4,422,139,667.49/74,720.17
6. Step 6: Final answer
   x = 59,182.68