Finding the Fourth Proportional to 77,412.52, 116,074.86 and 70,807.96

Step by Step Solution

1. Step 1: Write the proportion equation
   77,412.52 : 116,074.86 = 70,807.96 : x
2. Step 2: Convert to fraction form
   77,412.52/116,074.86 = 70,807.96/x
3. Step 3: Cross multiply
   77,412.52x = 116,074.86 × 70,807.96
4. Step 4: Simplify right side
   77,412.52x = 8,219,024,043.89
5. Step 5: Solve for x
   x = 8,219,024,043.89/77,412.52
6. Step 6: Final answer
   x = 106,171.77