Finding the Fourth Proportional to 76,828,374.47, 105,956,152.23 and 54,457,111.34

Step by Step Solution

1. Step 1: Write the proportion equation
   76,828,374.47 : 105,956,152.23 = 54,457,111.34 : x
2. Step 2: Convert to fraction form
   76,828,374.47/105,956,152.23 = 54,457,111.34/x
3. Step 3: Cross multiply
   76,828,374.47x = 105,956,152.23 × 54,457,111.34
4. Step 4: Simplify right side
   76,828,374.47x = 5,770,065,979,147,100
5. Step 5: Solve for x
   x = 5,770,065,979,147,100/76,828,374.47
6. Step 6: Final answer
   x = 75,103,319.82