Finding the Fourth Proportional to 139,886.98, 193,043.98 and 76,224.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,886.98 : 193,043.98 = 76,224.72 : x
2. Step 2: Convert to fraction form
   139,886.98/193,043.98 = 76,224.72/x
3. Step 3: Cross multiply
   139,886.98x = 193,043.98 × 76,224.72
4. Step 4: Simplify right side
   139,886.98x = 14,714,723,323.19
5. Step 5: Solve for x
   x = 14,714,723,323.19/139,886.98
6. Step 6: Final answer
   x = 105,190.09