Finding the Fourth Proportional to 111,484.50, 153,848.61 and 61,186.74

Step by Step Solution

1. Step 1: Write the proportion equation
   111,484.50 : 153,848.61 = 61,186.74 : x
2. Step 2: Convert to fraction form
   111,484.50/153,848.61 = 61,186.74/x
3. Step 3: Cross multiply
   111,484.50x = 153,848.61 × 61,186.74
4. Step 4: Simplify right side
   111,484.50x = 9,413,494,899.43
5. Step 5: Solve for x
   x = 9,413,494,899.43/111,484.50
6. Step 6: Final answer
   x = 84,437.70