Finding the Fourth Proportional to 76,962.69, 106,207.42 and 42,971.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,962.69 : 106,207.42 = 42,971.72 : x
2. Step 2: Convert to fraction form
   76,962.69/106,207.42 = 42,971.72/x
3. Step 3: Cross multiply
   76,962.69x = 106,207.42 × 42,971.72
4. Step 4: Simplify right side
   76,962.69x = 4,563,914,774.98
5. Step 5: Solve for x
   x = 4,563,914,774.98/76,962.69
6. Step 6: Final answer
   x = 59,300.35