Finding the Fourth Proportional to 67,870.84, 93,666.20 and 39,191.72

Step by Step Solution

1. Step 1: Write the proportion equation
   67,870.84 : 93,666.20 = 39,191.72 : x
2. Step 2: Convert to fraction form
   67,870.84/93,666.20 = 39,191.72/x
3. Step 3: Cross multiply
   67,870.84x = 93,666.20 × 39,191.72
4. Step 4: Simplify right side
   67,870.84x = 3,670,939,483.86
5. Step 5: Solve for x
   x = 3,670,939,483.86/67,870.84
6. Step 6: Final answer
   x = 54,087.14