Finding the Fourth Proportional to 93,570.48, 129,127.42 and 51,128.10

Step by Step Solution

1. Step 1: Write the proportion equation
   93,570.48 : 129,127.42 = 51,128.10 : x
2. Step 2: Convert to fraction form
   93,570.48/129,127.42 = 51,128.10/x
3. Step 3: Cross multiply
   93,570.48x = 129,127.42 × 51,128.10
4. Step 4: Simplify right side
   93,570.48x = 6,602,039,642.50
5. Step 5: Solve for x
   x = 6,602,039,642.50/93,570.48
6. Step 6: Final answer
   x = 70,556.86