Finding the Fourth Proportional to 111,131.67, 153,386.69 and 70,837.41

Step by Step Solution

1. Step 1: Write the proportion equation
   111,131.67 : 153,386.69 = 70,837.41 : x
2. Step 2: Convert to fraction form
   111,131.67/153,386.69 = 70,837.41/x
3. Step 3: Cross multiply
   111,131.67x = 153,386.69 × 70,837.41
4. Step 4: Simplify right side
   111,131.67x = 10,865,515,493.89
5. Step 5: Solve for x
   x = 10,865,515,493.89/111,131.67
6. Step 6: Final answer
   x = 97,771.55