Finding the Fourth Proportional to 111,483.72, 153,917.28 and 77,482.08

Step by Step Solution

1. Step 1: Write the proportion equation
   111,483.72 : 153,917.28 = 77,482.08 : x
2. Step 2: Convert to fraction form
   111,483.72/153,917.28 = 77,482.08/x
3. Step 3: Cross multiply
   111,483.72x = 153,917.28 × 77,482.08
4. Step 4: Simplify right side
   111,483.72x = 11,925,831,002.34
5. Step 5: Solve for x
   x = 11,925,831,002.34/111,483.72
6. Step 6: Final answer
   x = 106,973.74