Finding the Fourth Proportional to 93,426.07, 128,930.72 and 50,987.33

Step by Step Solution

1. Step 1: Write the proportion equation
   93,426.07 : 128,930.72 = 50,987.33 : x
2. Step 2: Convert to fraction form
   93,426.07/128,930.72 = 50,987.33/x
3. Step 3: Cross multiply
   93,426.07x = 128,930.72 × 50,987.33
4. Step 4: Simplify right side
   93,426.07x = 6,573,833,167.78
5. Step 5: Solve for x
   x = 6,573,833,167.78/93,426.07
6. Step 6: Final answer
   x = 70,364.01