Finding the Fourth Proportional to 106,851.35, 147,283.77 and 72,385.59

Step by Step Solution

1. Step 1: Write the proportion equation
   106,851.35 : 147,283.77 = 72,385.59 : x
2. Step 2: Convert to fraction form
   106,851.35/147,283.77 = 72,385.59/x
3. Step 3: Cross multiply
   106,851.35x = 147,283.77 × 72,385.59
4. Step 4: Simplify right side
   106,851.35x = 10,661,223,412.63
5. Step 5: Solve for x
   x = 10,661,223,412.63/106,851.35
6. Step 6: Final answer
   x = 99,776.21