Finding the Fourth Proportional to 137,789.86, 190,148.34 and 77,359

Step by Step Solution

1. Step 1: Write the proportion equation
   137,789.86 : 190,148.34 = 77,359 : x
2. Step 2: Convert to fraction form
   137,789.86/190,148.34 = 77,359/x
3. Step 3: Cross multiply
   137,789.86x = 190,148.34 × 77,359
4. Step 4: Simplify right side
   137,789.86x = 14,709,685,434.06
5. Step 5: Solve for x
   x = 14,709,685,434.06/137,789.86
6. Step 6: Final answer
   x = 106,754.48