Finding the Fourth Proportional to 76,510.51, 105,587.67 and 42,518.86

Step by Step Solution

1. Step 1: Write the proportion equation
   76,510.51 : 105,587.67 = 42,518.86 : x
2. Step 2: Convert to fraction form
   76,510.51/105,587.67 = 42,518.86/x
3. Step 3: Cross multiply
   76,510.51x = 105,587.67 × 42,518.86
4. Step 4: Simplify right side
   76,510.51x = 4,489,467,358.46
5. Step 5: Solve for x
   x = 4,489,467,358.46/76,510.51
6. Step 6: Final answer
   x = 58,677.79