Finding the Fourth Proportional to 134,978.37, 186,266.58 and 74,547.72

Step by Step Solution

1. Step 1: Write the proportion equation
   134,978.37 : 186,266.58 = 74,547.72 : x
2. Step 2: Convert to fraction form
   134,978.37/186,266.58 = 74,547.72/x
3. Step 3: Cross multiply
   134,978.37x = 186,266.58 × 74,547.72
4. Step 4: Simplify right side
   134,978.37x = 13,885,748,851.20
5. Step 5: Solve for x
   x = 13,885,748,851.20/134,978.37
6. Step 6: Final answer
   x = 102,873.88