Finding the Fourth Proportional to 107,128.56, 147,837.42 and 59,389.19

Step by Step Solution

1. Step 1: Write the proportion equation
   107,128.56 : 147,837.42 = 59,389.19 : x
2. Step 2: Convert to fraction form
   107,128.56/147,837.42 = 59,389.19/x
3. Step 3: Cross multiply
   107,128.56x = 147,837.42 × 59,389.19
4. Step 4: Simplify right side
   107,128.56x = 8,779,944,625.49
5. Step 5: Solve for x
   x = 8,779,944,625.49/107,128.56
6. Step 6: Final answer
   x = 81,957.09