Finding the Fourth Proportional to 67,870.19, 93,629.36 and 42,360.05

Step by Step Solution

1. Step 1: Write the proportion equation
   67,870.19 : 93,629.36 = 42,360.05 : x
2. Step 2: Convert to fraction form
   67,870.19/93,629.36 = 42,360.05/x
3. Step 3: Cross multiply
   67,870.19x = 93,629.36 × 42,360.05
4. Step 4: Simplify right side
   67,870.19x = 3,966,143,691.12
5. Step 5: Solve for x
   x = 3,966,143,691.12/67,870.19
6. Step 6: Final answer
   x = 58,437.20