Finding the Fourth Proportional to 138,978.82, 191,856.90 and 93,117.44

Step by Step Solution

1. Step 1: Write the proportion equation
   138,978.82 : 191,856.90 = 93,117.44 : x
2. Step 2: Convert to fraction form
   138,978.82/191,856.90 = 93,117.44/x
3. Step 3: Cross multiply
   138,978.82x = 191,856.90 × 93,117.44
4. Step 4: Simplify right side
   138,978.82x = 17,865,223,374.34
5. Step 5: Solve for x
   x = 17,865,223,374.34/138,978.82
6. Step 6: Final answer
   x = 128,546.37