Finding the Fourth Proportional to 107,588.86, 148,503.89 and 71,778.78

Step by Step Solution

1. Step 1: Write the proportion equation
   107,588.86 : 148,503.89 = 71,778.78 : x
2. Step 2: Convert to fraction form
   107,588.86/148,503.89 = 71,778.78/x
3. Step 3: Cross multiply
   107,588.86x = 148,503.89 × 71,778.78
4. Step 4: Simplify right side
   107,588.86x = 10,659,427,690.56
5. Step 5: Solve for x
   x = 10,659,427,690.56/107,588.86
6. Step 6: Final answer
   x = 99,075.57