Finding the Fourth Proportional to 92,820.06, 139,018.77 and 72,703.98

Step by Step Solution

1. Step 1: Write the proportion equation
   92,820.06 : 139,018.77 = 72,703.98 : x
2. Step 2: Convert to fraction form
   92,820.06/139,018.77 = 72,703.98/x
3. Step 3: Cross multiply
   92,820.06x = 139,018.77 × 72,703.98
4. Step 4: Simplify right side
   92,820.06x = 10,107,217,873.70
5. Step 5: Solve for x
   x = 10,107,217,873.70/92,820.06
6. Step 6: Final answer
   x = 108,890.45