Finding the Fourth Proportional to 139,012.56, 191,837.56 and 75,350.32

Step by Step Solution

1. Step 1: Write the proportion equation
   139,012.56 : 191,837.56 = 75,350.32 : x
2. Step 2: Convert to fraction form
   139,012.56/191,837.56 = 75,350.32/x
3. Step 3: Cross multiply
   139,012.56x = 191,837.56 × 75,350.32
4. Step 4: Simplify right side
   139,012.56x = 14,455,021,534.02
5. Step 5: Solve for x
   x = 14,455,021,534.02/139,012.56
6. Step 6: Final answer
   x = 103,983.56