Finding the Fourth Proportional to 88,091.99, 121,667.87 and 58,011.76

Step by Step Solution

1. Step 1: Write the proportion equation
   88,091.99 : 121,667.87 = 58,011.76 : x
2. Step 2: Convert to fraction form
   88,091.99/121,667.87 = 58,011.76/x
3. Step 3: Cross multiply
   88,091.99x = 121,667.87 × 58,011.76
4. Step 4: Simplify right side
   88,091.99x = 7,058,167,571.27
5. Step 5: Solve for x
   x = 7,058,167,571.27/88,091.99
6. Step 6: Final answer
   x = 80,122.70