Finding the Fourth Proportional to 139,886.07, 210,012.02 and 83,063.73

Step by Step Solution

1. Step 1: Write the proportion equation
   139,886.07 : 210,012.02 = 83,063.73 : x
2. Step 2: Convert to fraction form
   139,886.07/210,012.02 = 83,063.73/x
3. Step 3: Cross multiply
   139,886.07x = 210,012.02 × 83,063.73
4. Step 4: Simplify right side
   139,886.07x = 17,444,381,726.03
5. Step 5: Solve for x
   x = 17,444,381,726.03/139,886.07
6. Step 6: Final answer
   x = 124,704.21