Finding the Fourth Proportional to 140,081.34, 193,312.71 and 76,420.47

Step by Step Solution

1. Step 1: Write the proportion equation
   140,081.34 : 193,312.71 = 76,420.47 : x
2. Step 2: Convert to fraction form
   140,081.34/193,312.71 = 76,420.47/x
3. Step 3: Cross multiply
   140,081.34x = 193,312.71 × 76,420.47
4. Step 4: Simplify right side
   140,081.34x = 14,773,048,155.17
5. Step 5: Solve for x
   x = 14,773,048,155.17/140,081.34
6. Step 6: Final answer
   x = 105,460.50