Finding the Fourth Proportional to 132,637.61, 183,034.31 and 72,207

Step by Step Solution

1. Step 1: Write the proportion equation
   132,637.61 : 183,034.31 = 72,207 : x
2. Step 2: Convert to fraction form
   132,637.61/183,034.31 = 72,207/x
3. Step 3: Cross multiply
   132,637.61x = 183,034.31 × 72,207
4. Step 4: Simplify right side
   132,637.61x = 13,216,358,061.14
5. Step 5: Solve for x
   x = 13,216,358,061.14/132,637.61
6. Step 6: Final answer
   x = 99,642.61