Finding the Fourth Proportional to 138,155.84, 190,654.72 and 77,726.52

Step by Step Solution

1. Step 1: Write the proportion equation
   138,155.84 : 190,654.72 = 77,726.52 : x
2. Step 2: Convert to fraction form
   138,155.84/190,654.72 = 77,726.52/x
3. Step 3: Cross multiply
   138,155.84x = 190,654.72 × 77,726.52
4. Step 4: Simplify right side
   138,155.84x = 14,818,927,907.17
5. Step 5: Solve for x
   x = 14,818,927,907.17/138,155.84
6. Step 6: Final answer
   x = 107,262.41