Finding the Fourth Proportional to 102,412.57, 141,389.89 and 91,050.62

Step by Step Solution

1. Step 1: Write the proportion equation
   102,412.57 : 141,389.89 = 91,050.62 : x
2. Step 2: Convert to fraction form
   102,412.57/141,389.89 = 91,050.62/x
3. Step 3: Cross multiply
   102,412.57x = 141,389.89 × 91,050.62
4. Step 4: Simplify right side
   102,412.57x = 12,873,637,146.23
5. Step 5: Solve for x
   x = 12,873,637,146.23/102,412.57
6. Step 6: Final answer
   x = 125,703.68