Finding the Fourth Proportional to 139,472.31, 209,090.88 and 60,527.07

Step by Step Solution

1. Step 1: Write the proportion equation
   139,472.31 : 209,090.88 = 60,527.07 : x
2. Step 2: Convert to fraction form
   139,472.31/209,090.88 = 60,527.07/x
3. Step 3: Cross multiply
   139,472.31x = 209,090.88 × 60,527.07
4. Step 4: Simplify right side
   139,472.31x = 12,655,658,330.12
5. Step 5: Solve for x
   x = 12,655,658,330.12/139,472.31
6. Step 6: Final answer
   x = 90,739.58