Finding the Fourth Proportional to 62,128.04, 93,051.86 and 28,778.05

Step by Step Solution

1. Step 1: Write the proportion equation
   62,128.04 : 93,051.86 = 28,778.05 : x
2. Step 2: Convert to fraction form
   62,128.04/93,051.86 = 28,778.05/x
3. Step 3: Cross multiply
   62,128.04x = 93,051.86 × 28,778.05
4. Step 4: Simplify right side
   62,128.04x = 2,677,851,079.67
5. Step 5: Solve for x
   x = 2,677,851,079.67/62,128.04
6. Step 6: Final answer
   x = 43,102.13