Finding the Fourth Proportional to 148,713.72, 205,262.82 and 85,071.48

Step by Step Solution

1. Step 1: Write the proportion equation
   148,713.72 : 205,262.82 = 85,071.48 : x
2. Step 2: Convert to fraction form
   148,713.72/205,262.82 = 85,071.48/x
3. Step 3: Cross multiply
   148,713.72x = 205,262.82 × 85,071.48
4. Step 4: Simplify right side
   148,713.72x = 17,462,011,886.37
5. Step 5: Solve for x
   x = 17,462,011,886.37/148,713.72
6. Step 6: Final answer
   x = 117,420.32