Finding the Fourth Proportional to 101,131.24, 139,536.22 and 61,830.30

Step by Step Solution

1. Step 1: Write the proportion equation
   101,131.24 : 139,536.22 = 61,830.30 : x
2. Step 2: Convert to fraction form
   101,131.24/139,536.22 = 61,830.30/x
3. Step 3: Cross multiply
   101,131.24x = 139,536.22 × 61,830.30
4. Step 4: Simplify right side
   101,131.24x = 8,627,566,343.47
5. Step 5: Solve for x
   x = 8,627,566,343.47/101,131.24
6. Step 6: Final answer
   x = 85,310.60