Finding the Fourth Proportional to 111,577.84, 153,978.51 and 61,276.84

Step by Step Solution

1. Step 1: Write the proportion equation
   111,577.84 : 153,978.51 = 61,276.84 : x
2. Step 2: Convert to fraction form
   111,577.84/153,978.51 = 61,276.84/x
3. Step 3: Cross multiply
   111,577.84x = 153,978.51 × 61,276.84
4. Step 4: Simplify right side
   111,577.84x = 9,435,316,520.71
5. Step 5: Solve for x
   x = 9,435,316,520.71/111,577.84
6. Step 6: Final answer
   x = 84,562.64