Finding the Fourth Proportional to 66,550.84, 91,881.61 and 42,365.45

Step by Step Solution

1. Step 1: Write the proportion equation
   66,550.84 : 91,881.61 = 42,365.45 : x
2. Step 2: Convert to fraction form
   66,550.84/91,881.61 = 42,365.45/x
3. Step 3: Cross multiply
   66,550.84x = 91,881.61 × 42,365.45
4. Step 4: Simplify right side
   66,550.84x = 3,892,605,878.16
5. Step 5: Solve for x
   x = 3,892,605,878.16/66,550.84
6. Step 6: Final answer
   x = 58,490.71