Finding the Fourth Proportional to 76,663.76, 105,795.16 and 42,671.70

Step by Step Solution

1. Step 1: Write the proportion equation
   76,663.76 : 105,795.16 = 42,671.70 : x
2. Step 2: Convert to fraction form
   76,663.76/105,795.16 = 42,671.70/x
3. Step 3: Cross multiply
   76,663.76x = 105,795.16 × 42,671.70
4. Step 4: Simplify right side
   76,663.76x = 4,514,459,222.29
5. Step 5: Solve for x
   x = 4,514,459,222.29/76,663.76
6. Step 6: Final answer
   x = 58,886.49