Finding the Fourth Proportional to 66,547.09, 91,876.43 and 42,361.70

Step by Step Solution

1. Step 1: Write the proportion equation
   66,547.09 : 91,876.43 = 42,361.70 : x
2. Step 2: Convert to fraction form
   66,547.09/91,876.43 = 42,361.70/x
3. Step 3: Cross multiply
   66,547.09x = 91,876.43 × 42,361.70
4. Step 4: Simplify right side
   66,547.09x = 3,892,042,100.33
5. Step 5: Solve for x
   x = 3,892,042,100.33/66,547.09
6. Step 6: Final answer
   x = 58,485.54