Finding the Fourth Proportional to 128,633,823.50, 177,514,289.94 and 69,896,667.83

Step by Step Solution

1. Step 1: Write the proportion equation
   128,633,823.50 : 177,514,289.94 = 69,896,667.83 : x
2. Step 2: Convert to fraction form
   128,633,823.50/177,514,289.94 = 69,896,667.83/x
3. Step 3: Cross multiply
   128,633,823.50x = 177,514,289.94 × 69,896,667.83
4. Step 4: Simplify right side
   128,633,823.50x = 12,407,657,358,389,032
5. Step 5: Solve for x
   x = 12,407,657,358,389,032/128,633,823.50
6. Step 6: Final answer
   x = 96,457,191.59