Finding the Fourth Proportional to 76,864.51, 106,063.59 and 42,865.03

Step by Step Solution

1. Step 1: Write the proportion equation
   76,864.51 : 106,063.59 = 42,865.03 : x
2. Step 2: Convert to fraction form
   76,864.51/106,063.59 = 42,865.03/x
3. Step 3: Cross multiply
   76,864.51x = 106,063.59 × 42,865.03
4. Step 4: Simplify right side
   76,864.51x = 4,546,418,967.26
5. Step 5: Solve for x
   x = 4,546,418,967.26/76,864.51
6. Step 6: Final answer
   x = 59,148.48