Finding the Fourth Proportional to 138,588.72, 191,252.37 and 74,926.50

Step by Step Solution

1. Step 1: Write the proportion equation
   138,588.72 : 191,252.37 = 74,926.50 : x
2. Step 2: Convert to fraction form
   138,588.72/191,252.37 = 74,926.50/x
3. Step 3: Cross multiply
   138,588.72x = 191,252.37 × 74,926.50
4. Step 4: Simplify right side
   138,588.72x = 14,329,870,700.81
5. Step 5: Solve for x
   x = 14,329,870,700.81/138,588.72
6. Step 6: Final answer
   x = 103,398.54