Finding the Fourth Proportional to 66,541, 91,826.79 and 42,667.77

Step by Step Solution

1. Step 1: Write the proportion equation
   66,541 : 91,826.79 = 42,667.77 : x
2. Step 2: Convert to fraction form
   66,541/91,826.79 = 42,667.77/x
3. Step 3: Cross multiply
   66,541x = 91,826.79 × 42,667.77
4. Step 4: Simplify right side
   66,541x = 3,918,044,355.56
5. Step 5: Solve for x
   x = 3,918,044,355.56/66,541
6. Step 6: Final answer
   x = 58,881.66