Finding the Fourth Proportional to 105,681.17, 158,573.64 and 42,498.74

Step by Step Solution

1. Step 1: Write the proportion equation
   105,681.17 : 158,573.64 = 42,498.74 : x
2. Step 2: Convert to fraction form
   105,681.17/158,573.64 = 42,498.74/x
3. Step 3: Cross multiply
   105,681.17x = 158,573.64 × 42,498.74
4. Step 4: Simplify right side
   105,681.17x = 6,739,180,453.02
5. Step 5: Solve for x
   x = 6,739,180,453.02/105,681.17
6. Step 6: Final answer
   x = 63,768.98